Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi list. I want to change grease in condenser and binocular tubes of Leica DM IRE2 microscope. The old grease solidified and made those parts stuck. Can anyone recommend a type and/or supplier of a grease for such purpose? Thank you. Petro. |
 
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Oshel, Philip Eugene |
Re: Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Petro, I use white lithium grease for this. Available in hardware and auto parts stores. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Piter_ <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Sunday, 03February, 2019 at 07:06 To: "[hidden email]" <[hidden email]> Subject: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi list. I want to change grease in condenser and binocular tubes of Leica DM IRE2 microscope. The old grease solidified and made those parts stuck. Can anyone recommend a type and/or supplier of a grease for such purpose? Thank you. Petro. |
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Dear Phil. Lithium grease was the first thing came into my mind. I used to have a big can of Litol for my bike. But then I have read some scary info that microscope grease has to be very special or it will evaporate, leak and destroy your equipment.... So that kind of stopped me from using it. Do you use it for long time? My guess is you had no problems with it :) My intension was to put some dumping grease there. Like Nye A975, which is recommended for focusing mechanism. Maybe it is an overkill. Thanks. Petro. On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene <[hidden email] wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Petro, > > I use white lithium grease for this. Available in hardware and auto parts > stores. > > Phil > ------------- > Philip Oshel > Imaging Facility Director > Biology Department > 1304 Biosciences > 1455 Calumet Ct. > Central Michigan University > Mt. Pleasant, MI 48859 > 989 774-3576 office > 989 774-7567 lab > > -----Original Message----- > From: Confocal Microscopy List <[hidden email]> on > behalf of Piter_ <[hidden email]> > Reply-To: Confocal Microscopy List <[hidden email]> > Date: Sunday, 03February, 2019 at 07:06 > To: "[hidden email]" <[hidden email]> > Subject: Oil/grease for microscope? > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your > posting. > ***** > > Hi list. > I want to change grease in condenser and binocular tubes of Leica DM > IRE2 > microscope. The old grease solidified and made those parts stuck. Can > anyone recommend a type and/or supplier of a grease for such purpose? > Thank you. > Petro. > > > |
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** There is grease available for vacuum applications that is very low off-gassing. If you use that stuff you will probably be fine. It is typically used for moving parts inside vacuum chambers or other low-pressure environments. Craig On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Dear Phil. > Lithium grease was the first thing came into my mind. I used to have a big > can of Litol for my bike. But then I have read some scary info that > microscope grease has to be very special or it will evaporate, leak and > destroy your equipment.... So that kind of stopped me from using it. Do you > use it for long time? My guess is you had no problems with it :) My > intension was to put some dumping grease there. Like Nye A975, which is > recommended for focusing mechanism. Maybe it is an overkill. > > Thanks. > Petro. > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene <[hidden email] wrote: > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > posting. > > ***** > > > > Petro, > > > > I use white lithium grease for this. Available in hardware and auto parts > > stores. > > > > Phil > > ------------- > > Philip Oshel > > Imaging Facility Director > > Biology Department > > 1304 Biosciences > > 1455 Calumet Ct. > > Central Michigan University > > Mt. Pleasant, MI 48859 > > 989 774-3576 office > > 989 774-7567 lab > > > > -----Original Message----- > > From: Confocal Microscopy List <[hidden email]> on > > behalf of Piter_ <[hidden email]> > > Reply-To: Confocal Microscopy List <[hidden email]> > > Date: Sunday, 03February, 2019 at 07:06 > > To: "[hidden email]" <[hidden email] > > > > Subject: Oil/grease for microscope? > > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > > posting. > > ***** > > > > Hi list. > > I want to change grease in condenser and binocular tubes of Leica DM > > IRE2 > > microscope. The old grease solidified and made those parts stuck. Can > > anyone recommend a type and/or supplier of a grease for such purpose? > > Thank you. > > Petro. > > > > > > > |
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Oshel, Philip Eugene |
Re: Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Note that for-real vacuum grease is NOT silicone vacuum grease. The silicone grease is only suitable for sealing desiccators. Fomblin is probably the best choice of vacuum grease for moving parts. Be aware that any high vacuum grease is high viscosity and can be "sticky". Use a very small amount and apply as a *thin* layer. It's also expensive, but all true high-vacuum greases are. Also: if you're applying the grease to any polymer or rubber parts, first check it on a bit that doesn't matter. The grease may goo up the polymer over time, especially if the part is warmed or heated. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Craig Brideau <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Monday, 04February, 2019 at 17:44 To: "[hidden email]" <[hidden email]> Subject: Re: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** There is grease available for vacuum applications that is very low off-gassing. If you use that stuff you will probably be fine. It is typically used for moving parts inside vacuum chambers or other low-pressure environments. Craig On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Dear Phil. > Lithium grease was the first thing came into my mind. I used to have a big > can of Litol for my bike. But then I have read some scary info that > microscope grease has to be very special or it will evaporate, leak and > destroy your equipment.... So that kind of stopped me from using it. Do you > use it for long time? My guess is you had no problems with it :) My > intension was to put some dumping grease there. Like Nye A975, which is > recommended for focusing mechanism. Maybe it is an overkill. > > Thanks. > Petro. > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene <[hidden email] wrote: > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > posting. > > ***** > > > > Petro, > > > > I use white lithium grease for this. Available in hardware and auto parts > > stores. > > > > Phil > > ------------- > > Philip Oshel > > Imaging Facility Director > > Biology Department > > 1304 Biosciences > > 1455 Calumet Ct. > > Central Michigan University > > Mt. Pleasant, MI 48859 > > 989 774-3576 office > > 989 774-7567 lab > > > > -----Original Message----- > > From: Confocal Microscopy List <[hidden email]> on > > behalf of Piter_ <[hidden email]> > > Reply-To: Confocal Microscopy List <[hidden email]> > > Date: Sunday, 03February, 2019 at 07:06 > > To: "[hidden email]" <[hidden email] > > > > Subject: Oil/grease for microscope? > > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > > posting. > > ***** > > > > Hi list. > > I want to change grease in condenser and binocular tubes of Leica DM > > IRE2 > > microscope. The old grease solidified and made those parts stuck. Can > > anyone recommend a type and/or supplier of a grease for such purpose? > > Thank you. > > Petro. > > > > > > > |
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Mark Cannell-2 |
Re: Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Seems to me that Dow silicone High vacuum grease is a good choice -they recommend it for optical components and being silicone protects o rings well. It's no so sticky. No need to worry about super high vacuum in this application ... ? HTH Mark B. Cannell. Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 5/02/19, 1:23 PM, "Confocal Microscopy List on behalf of Oshel, Philip Eugene" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Note that for-real vacuum grease is NOT silicone vacuum grease. The silicone grease is only suitable for sealing desiccators. Fomblin is probably the best choice of vacuum grease for moving parts. Be aware that any high vacuum grease is high viscosity and can be "sticky". Use a very small amount and apply as a *thin* layer. It's also expensive, but all true high-vacuum greases are. Also: if you're applying the grease to any polymer or rubber parts, first check it on a bit that doesn't matter. The grease may goo up the polymer over time, especially if the part is warmed or heated. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Craig Brideau <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Monday, 04February, 2019 at 17:44 To: "[hidden email]" <[hidden email]> Subject: Re: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** There is grease available for vacuum applications that is very low off-gassing. If you use that stuff you will probably be fine. It is typically used for moving parts inside vacuum chambers or other low-pressure environments. Craig On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Dear Phil. > Lithium grease was the first thing came into my mind. I used to have a big > can of Litol for my bike. But then I have read some scary info that > microscope grease has to be very special or it will evaporate, leak and > destroy your equipment.... So that kind of stopped me from using it. Do you > use it for long time? My guess is you had no problems with it :) My > intension was to put some dumping grease there. Like Nye A975, which is > recommended for focusing mechanism. Maybe it is an overkill. > > Thanks. > Petro. > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene <[hidden email] wrote: > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > posting. > > ***** > > > > Petro, > > > > I use white lithium grease for this. Available in hardware and auto parts > > stores. > > > > Phil > > ------------- > > Philip Oshel > > Imaging Facility Director > > Biology Department > > 1304 Biosciences > > 1455 Calumet Ct. > > Central Michigan University > > Mt. Pleasant, MI 48859 > > 989 774-3576 office > > 989 774-7567 lab > > > > -----Original Message----- > > From: Confocal Microscopy List <[hidden email]> on > > behalf of Piter_ <[hidden email]> > > Reply-To: Confocal Microscopy List <[hidden email]> > > Date: Sunday, 03February, 2019 at 07:06 > > To: "[hidden email]" <[hidden email] > > > > Subject: Oil/grease for microscope? > > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > > posting. > > ***** > > > > Hi list. > > I want to change grease in condenser and binocular tubes of Leica DM > > IRE2 > > microscope. The old grease solidified and made those parts stuck. Can > > anyone recommend a type and/or supplier of a grease for such purpose? > > Thank you. > > Petro. > > > > > > > |
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Oshel, Philip Eugene |
Re: Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Correct, the vacuum is not the issue, but Fomblin and like are still good greases, just pricey. They don't outgas and so won't get gunk on the optics or otherwise contaminate the optics. I don't think the silicone high vacuum greases are good for lubricating. First, they give off acetic acid vapor - I don't see why Dow would recommend it for optical components. Second, the silicone greases are sticky. Not good for moving parts. It does protect o-rings, but watch the acetic acid and o-ring composition. Silicone grease seals coverslips well, though. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Mark Cannell <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Tuesday, 05February, 2019 at 11:02 To: "[hidden email]" <[hidden email]> Subject: Re: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Seems to me that Dow silicone High vacuum grease is a good choice -they recommend it for optical components and being silicone protects o rings well. It's no so sticky. No need to worry about super high vacuum in this application ... ? HTH Mark B. Cannell. Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 5/02/19, 1:23 PM, "Confocal Microscopy List on behalf of Oshel, Philip Eugene" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Note that for-real vacuum grease is NOT silicone vacuum grease. The silicone grease is only suitable for sealing desiccators. Fomblin is probably the best choice of vacuum grease for moving parts. Be aware that any high vacuum grease is high viscosity and can be "sticky". Use a very small amount and apply as a *thin* layer. It's also expensive, but all true high-vacuum greases are. Also: if you're applying the grease to any polymer or rubber parts, first check it on a bit that doesn't matter. The grease may goo up the polymer over time, especially if the part is warmed or heated. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Craig Brideau <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Monday, 04February, 2019 at 17:44 To: "[hidden email]" <[hidden email]> Subject: Re: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** There is grease available for vacuum applications that is very low off-gassing. If you use that stuff you will probably be fine. It is typically used for moving parts inside vacuum chambers or other low-pressure environments. Craig On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Dear Phil. > Lithium grease was the first thing came into my mind. I used to have a big > can of Litol for my bike. But then I have read some scary info that > microscope grease has to be very special or it will evaporate, leak and > destroy your equipment.... So that kind of stopped me from using it. Do you > use it for long time? My guess is you had no problems with it :) My > intension was to put some dumping grease there. Like Nye A975, which is > recommended for focusing mechanism. Maybe it is an overkill. > > Thanks. > Petro. > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene <[hidden email] wrote: > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > posting. > > ***** > > > > Petro, > > > > I use white lithium grease for this. Available in hardware and auto parts > > stores. > > > > Phil > > ------------- > > Philip Oshel > > Imaging Facility Director > > Biology Department > > 1304 Biosciences > > 1455 Calumet Ct. > > Central Michigan University > > Mt. Pleasant, MI 48859 > > 989 774-3576 office > > 989 774-7567 lab > > > > -----Original Message----- > > From: Confocal Microscopy List <[hidden email]> on > > behalf of Piter_ <[hidden email]> > > Reply-To: Confocal Microscopy List <[hidden email]> > > Date: Sunday, 03February, 2019 at 07:06 > > To: "[hidden email]" <[hidden email] > > > > Subject: Oil/grease for microscope? > > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > > posting. > > ***** > > > > Hi list. > > I want to change grease in condenser and binocular tubes of Leica DM > > IRE2 > > microscope. The old grease solidified and made those parts stuck. Can > > anyone recommend a type and/or supplier of a grease for such purpose? > > Thank you. > > Petro. > > > > > > > |
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Mark Cannell-2 |
Re: Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** No acetic acid from the Dow corning stuff I've used -it's a specialty silicon polymer plus thickener -not polymerized "bathroom caulk" as far as I know -more like low MW sylgard I think. While it's exact composition may be a trade secret, it's vapour pressure is very low at 100oC so I doubt it could be outgassing much, if any, acetic acid. I've not seen it corroding brass parts. Mark B. Cannell. Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 5/02/19, 4:06 PM, "Confocal Microscopy List on behalf of Oshel, Philip Eugene" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Correct, the vacuum is not the issue, but Fomblin and like are still good greases, just pricey. They don't outgas and so won't get gunk on the optics or otherwise contaminate the optics. I don't think the silicone high vacuum greases are good for lubricating. First, they give off acetic acid vapor - I don't see why Dow would recommend it for optical components. Second, the silicone greases are sticky. Not good for moving parts. It does protect o-rings, but watch the acetic acid and o-ring composition. Silicone grease seals coverslips well, though. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Mark Cannell <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Tuesday, 05February, 2019 at 11:02 To: "[hidden email]" <[hidden email]> Subject: Re: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Seems to me that Dow silicone High vacuum grease is a good choice -they recommend it for optical components and being silicone protects o rings well. It's no so sticky. No need to worry about super high vacuum in this application ... ? HTH Mark B. Cannell. Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 5/02/19, 1:23 PM, "Confocal Microscopy List on behalf of Oshel, Philip Eugene" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Note that for-real vacuum grease is NOT silicone vacuum grease. The silicone grease is only suitable for sealing desiccators. Fomblin is probably the best choice of vacuum grease for moving parts. Be aware that any high vacuum grease is high viscosity and can be "sticky". Use a very small amount and apply as a *thin* layer. It's also expensive, but all true high-vacuum greases are. Also: if you're applying the grease to any polymer or rubber parts, first check it on a bit that doesn't matter. The grease may goo up the polymer over time, especially if the part is warmed or heated. Phil ------------- Philip Oshel Imaging Facility Director Biology Department 1304 Biosciences 1455 Calumet Ct. Central Michigan University Mt. Pleasant, MI 48859 989 774-3576 office 989 774-7567 lab -----Original Message----- From: Confocal Microscopy List <[hidden email]> on behalf of Craig Brideau <[hidden email]> Reply-To: Confocal Microscopy List <[hidden email]> Date: Monday, 04February, 2019 at 17:44 To: "[hidden email]" <[hidden email]> Subject: Re: Oil/grease for microscope? ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** There is grease available for vacuum applications that is very low off-gassing. If you use that stuff you will probably be fine. It is typically used for moving parts inside vacuum chambers or other low-pressure environments. Craig On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Dear Phil. > Lithium grease was the first thing came into my mind. I used to have a big > can of Litol for my bike. But then I have read some scary info that > microscope grease has to be very special or it will evaporate, leak and > destroy your equipment.... So that kind of stopped me from using it. Do you > use it for long time? My guess is you had no problems with it :) My > intension was to put some dumping grease there. Like Nye A975, which is > recommended for focusing mechanism. Maybe it is an overkill. > > Thanks. > Petro. > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene <[hidden email] wrote: > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > posting. > > ***** > > > > Petro, > > > > I use white lithium grease for this. Available in hardware and auto parts > > stores. > > > > Phil > > ------------- > > Philip Oshel > > Imaging Facility Director > > Biology Department > > 1304 Biosciences > > 1455 Calumet Ct. > > Central Michigan University > > Mt. Pleasant, MI 48859 > > 989 774-3576 office > > 989 774-7567 lab > > > > -----Original Message----- > > From: Confocal Microscopy List <[hidden email]> on > > behalf of Piter_ <[hidden email]> > > Reply-To: Confocal Microscopy List <[hidden email]> > > Date: Sunday, 03February, 2019 at 07:06 > > To: "[hidden email]" <[hidden email] > > > > Subject: Oil/grease for microscope? > > > > ***** > > To join, leave or search the confocal microscopy listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the link in your > > posting. > > ***** > > > > Hi list. > > I want to change grease in condenser and binocular tubes of Leica DM > > IRE2 > > microscope. The old grease solidified and made those parts stuck. Can > > anyone recommend a type and/or supplier of a grease for such purpose? > > Thank you. > > Petro. > > > > > > > |
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** I'm guessing you DON'T mean Dow Corning 732, as that is the one that has acetic acid. As Phil clarified, there is 'vacuum grease', and then there is 'grease for use in a vacuum'. They are not quite the same thing. Vacuum application servo lubricant grease is safe (grease for use in a vacuum), whereas the Dow Corning 732 is actually mean for creating a seal in a vacuum chamber etc. and can off-gas. Craig On Tue, Feb 5, 2019 at 9:18 AM Mark Cannell <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > No acetic acid from the Dow corning stuff I've used -it's a specialty > silicon polymer plus thickener -not polymerized "bathroom caulk" as far as > I know -more like low MW sylgard I think. While it's exact composition may > be a trade secret, it's vapour pressure is very low at 100oC so I doubt it > could be outgassing much, if any, acetic acid. I've not seen it corroding > brass parts. > > Mark B. Cannell. > Department of Physiology, Pharmacology & Neuroscience > School of Medical Sciences > University Walk > Bristol BS8 1TD > > [hidden email] > > > > On 5/02/19, 4:06 PM, "Confocal Microscopy List on behalf of Oshel, Philip > Eugene" <[hidden email] on behalf of [hidden email]> > wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your > posting. > ***** > > Correct, the vacuum is not the issue, but Fomblin and like are still > good greases, just pricey. They don't outgas and so won't get gunk on the > optics or otherwise contaminate the optics. > > I don't think the silicone high vacuum greases are good for > lubricating. First, they give off acetic acid vapor - I don't see why Dow > would recommend it for optical components. Second, the silicone greases are > sticky. Not good for moving parts. It does protect o-rings, but watch the > acetic acid and o-ring composition. > Silicone grease seals coverslips well, though. > > Phil > ------------- > Philip Oshel > Imaging Facility Director > Biology Department > 1304 Biosciences > 1455 Calumet Ct. > Central Michigan University > Mt. Pleasant, MI 48859 > 989 774-3576 office > 989 774-7567 lab > > -----Original Message----- > From: Confocal Microscopy List <[hidden email]> on > behalf of Mark Cannell <[hidden email]> > Reply-To: Confocal Microscopy List <[hidden email]> > Date: Tuesday, 05February, 2019 at 11:02 > To: "[hidden email]" < > [hidden email]> > Subject: Re: Oil/grease for microscope? > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your > posting. > ***** > > Seems to me that Dow silicone High vacuum grease is a good choice > -they recommend it for optical components and being silicone protects o > rings well. It's no so sticky. No need to worry about super high vacuum in > this application ... ? > > HTH > > Mark B. Cannell. > Department of Physiology, Pharmacology & Neuroscience > School of Medical Sciences > University Walk > Bristol BS8 1TD > > [hidden email] > > > > On 5/02/19, 1:23 PM, "Confocal Microscopy List on behalf of Oshel, > Philip Eugene" <[hidden email] on behalf of > [hidden email]> wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go > to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in > your posting. > ***** > > Note that for-real vacuum grease is NOT silicone vacuum > grease. The silicone grease is only suitable for sealing desiccators. > Fomblin is probably the best choice of vacuum grease for > moving parts. Be aware that any high vacuum grease is high viscosity and > can be "sticky". Use a very small amount and apply as a *thin* layer. > It's also expensive, but all true high-vacuum greases are. > Also: if you're applying the grease to any polymer or rubber > parts, first check it on a bit that doesn't matter. The grease may goo up > the polymer over time, especially if the part is warmed or heated. > > Phil > ------------- > Philip Oshel > Imaging Facility Director > Biology Department > 1304 Biosciences > 1455 Calumet Ct. > Central Michigan University > Mt. Pleasant, MI 48859 > 989 774-3576 office > 989 774-7567 lab > > -----Original Message----- > From: Confocal Microscopy List < > [hidden email]> on behalf of Craig Brideau < > [hidden email]> > Reply-To: Confocal Microscopy List < > [hidden email]> > Date: Monday, 04February, 2019 at 17:44 > To: "[hidden email]" < > [hidden email]> > Subject: Re: Oil/grease for microscope? > > ***** > To join, leave or search the confocal microscopy listserv, > go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link > in your posting. > ***** > > There is grease available for vacuum applications that is > very low > off-gassing. If you use that stuff you will probably be > fine. It is > typically used for moving parts inside vacuum chambers or > other > low-pressure environments. > > Craig > > On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> > wrote: > > > ***** > > To join, leave or search the confocal microscopy > listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the > link in your posting. > > ***** > > > > Dear Phil. > > Lithium grease was the first thing came into my mind. I > used to have a big > > can of Litol for my bike. But then I have read some > scary info that > > microscope grease has to be very special or it will > evaporate, leak and > > destroy your equipment.... So that kind of stopped me > from using it. Do you > > use it for long time? My guess is you had no problems > with it :) My > > intension was to put some dumping grease there. Like Nye > A975, which is > > recommended for focusing mechanism. Maybe it is an > overkill. > > > > Thanks. > > Petro. > > > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene < > [hidden email] wrote: > > > > > ***** > > > To join, leave or search the confocal microscopy > listserv, go to: > > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > > Post images on http://www.imgur.com and include the > link in your > > posting. > > > ***** > > > > > > Petro, > > > > > > I use white lithium grease for this. Available in > hardware and auto parts > > > stores. > > > > > > Phil > > > ------------- > > > Philip Oshel > > > Imaging Facility Director > > > Biology Department > > > 1304 Biosciences > > > 1455 Calumet Ct. > > > Central Michigan University > > > Mt. Pleasant, MI 48859 > > > 989 774-3576 office > > > 989 774-7567 lab > > > > > > -----Original Message----- > > > From: Confocal Microscopy List < > [hidden email]> on > > > behalf of Piter_ <[hidden email]> > > > Reply-To: Confocal Microscopy List < > [hidden email]> > > > Date: Sunday, 03February, 2019 at 07:06 > > > To: "[hidden email]" < > [hidden email] > > > > > > Subject: Oil/grease for microscope? > > > > > > ***** > > > To join, leave or search the confocal microscopy > listserv, go to: > > > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > > Post images on http://www.imgur.com and include > the link in your > > > posting. > > > ***** > > > > > > Hi list. > > > I want to change grease in condenser and > binocular tubes of Leica DM > > > IRE2 > > > microscope. The old grease solidified and made > those parts stuck. Can > > > anyone recommend a type and/or supplier of a > grease for such purpose? > > > Thank you. > > > Petro. > > > > > > > > > > > > > > > > > > > > |
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Mark Cannell-2 |
Re: Oil/grease for microscope?
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** 732 is certainly not high vacuum grease! Here is a spec sheet for Dow Corning high vacuum grease : https://www.emsdiasum.com/microscopy/technical/datasheet/60705.aspx HTH Mark B. Cannell Department of Physiology, Pharmacology & Neuroscience School of Medical Sciences University Walk Bristol BS8 1TD [hidden email] On 5/02/19, 4:58 PM, "Confocal Microscopy List on behalf of Craig Brideau" <[hidden email] on behalf of [hidden email]> wrote: ***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** I'm guessing you DON'T mean Dow Corning 732, as that is the one that has acetic acid. As Phil clarified, there is 'vacuum grease', and then there is 'grease for use in a vacuum'. They are not quite the same thing. Vacuum application servo lubricant grease is safe (grease for use in a vacuum), whereas the Dow Corning 732 is actually mean for creating a seal in a vacuum chamber etc. and can off-gas. Craig On Tue, Feb 5, 2019 at 9:18 AM Mark Cannell <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > No acetic acid from the Dow corning stuff I've used -it's a specialty > silicon polymer plus thickener -not polymerized "bathroom caulk" as far as > I know -more like low MW sylgard I think. While it's exact composition may > be a trade secret, it's vapour pressure is very low at 100oC so I doubt it > could be outgassing much, if any, acetic acid. I've not seen it corroding > brass parts. > > Mark B. Cannell. > Department of Physiology, Pharmacology & Neuroscience > School of Medical Sciences > University Walk > Bristol BS8 1TD > > [hidden email] > > > > On 5/02/19, 4:06 PM, "Confocal Microscopy List on behalf of Oshel, Philip > Eugene" <[hidden email] on behalf of [hidden email]> > wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your > posting. > ***** > > Correct, the vacuum is not the issue, but Fomblin and like are still > good greases, just pricey. They don't outgas and so won't get gunk on the > optics or otherwise contaminate the optics. > > I don't think the silicone high vacuum greases are good for > lubricating. First, they give off acetic acid vapor - I don't see why Dow > would recommend it for optical components. Second, the silicone greases are > sticky. Not good for moving parts. It does protect o-rings, but watch the > acetic acid and o-ring composition. > Silicone grease seals coverslips well, though. > > Phil > ------------- > Philip Oshel > Imaging Facility Director > Biology Department > 1304 Biosciences > 1455 Calumet Ct. > Central Michigan University > Mt. Pleasant, MI 48859 > 989 774-3576 office > 989 774-7567 lab > > -----Original Message----- > From: Confocal Microscopy List <[hidden email]> on > behalf of Mark Cannell <[hidden email]> > Reply-To: Confocal Microscopy List <[hidden email]> > Date: Tuesday, 05February, 2019 at 11:02 > To: "[hidden email]" < > [hidden email]> > Subject: Re: Oil/grease for microscope? > > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your > posting. > ***** > > Seems to me that Dow silicone High vacuum grease is a good choice > -they recommend it for optical components and being silicone protects o > rings well. It's no so sticky. No need to worry about super high vacuum in > this application ... ? > > HTH > > Mark B. Cannell. > Department of Physiology, Pharmacology & Neuroscience > School of Medical Sciences > University Walk > Bristol BS8 1TD > > [hidden email] > > > > On 5/02/19, 1:23 PM, "Confocal Microscopy List on behalf of Oshel, > Philip Eugene" <[hidden email] on behalf of > [hidden email]> wrote: > > ***** > To join, leave or search the confocal microscopy listserv, go > to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in > your posting. > ***** > > Note that for-real vacuum grease is NOT silicone vacuum > grease. The silicone grease is only suitable for sealing desiccators. > Fomblin is probably the best choice of vacuum grease for > moving parts. Be aware that any high vacuum grease is high viscosity and > can be "sticky". Use a very small amount and apply as a *thin* layer. > It's also expensive, but all true high-vacuum greases are. > Also: if you're applying the grease to any polymer or rubber > parts, first check it on a bit that doesn't matter. The grease may goo up > the polymer over time, especially if the part is warmed or heated. > > Phil > ------------- > Philip Oshel > Imaging Facility Director > Biology Department > 1304 Biosciences > 1455 Calumet Ct. > Central Michigan University > Mt. Pleasant, MI 48859 > 989 774-3576 office > 989 774-7567 lab > > -----Original Message----- > From: Confocal Microscopy List < > [hidden email]> on behalf of Craig Brideau < > [hidden email]> > Reply-To: Confocal Microscopy List < > [hidden email]> > Date: Monday, 04February, 2019 at 17:44 > To: "[hidden email]" < > [hidden email]> > Subject: Re: Oil/grease for microscope? > > ***** > To join, leave or search the confocal microscopy listserv, > go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link > in your posting. > ***** > > There is grease available for vacuum applications that is > very low > off-gassing. If you use that stuff you will probably be > fine. It is > typically used for moving parts inside vacuum chambers or > other > low-pressure environments. > > Craig > > On Mon, Feb 4, 2019 at 12:18 PM Piter_ <[hidden email]> > wrote: > > > ***** > > To join, leave or search the confocal microscopy > listserv, go to: > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > Post images on http://www.imgur.com and include the > link in your posting. > > ***** > > > > Dear Phil. > > Lithium grease was the first thing came into my mind. I > used to have a big > > can of Litol for my bike. But then I have read some > scary info that > > microscope grease has to be very special or it will > evaporate, leak and > > destroy your equipment.... So that kind of stopped me > from using it. Do you > > use it for long time? My guess is you had no problems > with it :) My > > intension was to put some dumping grease there. Like Nye > A975, which is > > recommended for focusing mechanism. Maybe it is an > overkill. > > > > Thanks. > > Petro. > > > > On Mon, Feb 4, 2019, 15:23 Oshel, Philip Eugene < > [hidden email] wrote: > > > > > ***** > > > To join, leave or search the confocal microscopy > listserv, go to: > > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > > Post images on http://www.imgur.com and include the > link in your > > posting. > > > ***** > > > > > > Petro, > > > > > > I use white lithium grease for this. Available in > hardware and auto parts > > > stores. > > > > > > Phil > > > ------------- > > > Philip Oshel > > > Imaging Facility Director > > > Biology Department > > > 1304 Biosciences > > > 1455 Calumet Ct. > > > Central Michigan University > > > Mt. Pleasant, MI 48859 > > > 989 774-3576 office > > > 989 774-7567 lab > > > > > > -----Original Message----- > > > From: Confocal Microscopy List < > [hidden email]> on > > > behalf of Piter_ <[hidden email]> > > > Reply-To: Confocal Microscopy List < > [hidden email]> > > > Date: Sunday, 03February, 2019 at 07:06 > > > To: "[hidden email]" < > [hidden email] > > > > > > Subject: Oil/grease for microscope? > > > > > > ***** > > > To join, leave or search the confocal microscopy > listserv, go to: > > > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > > > Post images on http://www.imgur.com and include > the link in your > > > posting. > > > ***** > > > > > > Hi list. > > > I want to change grease in condenser and > binocular tubes of Leica DM > > > IRE2 > > > microscope. The old grease solidified and made > those parts stuck. Can > > > anyone recommend a type and/or supplier of a > grease for such purpose? > > > Thank you. > > > Petro. > > > > > > > > > > > > > > > > > > > > |
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In reply to this post by Piter_
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi Petro You can try Losimol (http://www.losimol.de/en/products/#microscopes). Just as Dan Focht pointed out, there are many options to choose from. Cheers. |
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To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** Hi list. One more trick with solidified grease. If things do not move sometimes heating the mic part with hair dryer helps. Best. Petro. On Thu, Feb 7, 2019, 07:48 Wai Chan <[hidden email]> wrote: > ***** > To join, leave or search the confocal microscopy listserv, go to: > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy > Post images on http://www.imgur.com and include the link in your posting. > ***** > > Hi Petro > > You can try Losimol (http://www.losimol.de/en/products/#microscopes). > Just as Dan Focht pointed out, there are many options to choose from. > Cheers. > |
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