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I've seen the consequences of acetone on a modern objective front lens first hand, and it ain't pretty (the first element of the lens started to 'float' and could be moved independently of the rest of the objective by pushing on it with a cotton bud). Suffice to say it was a very expensive repair, and I'd avoid solvents anywhere near the front lens.
cheers,
David
________________________________
From: Steffen Dietzel <[log in to unmask]>
To: [log in to unmask]
Sent: Thursday, 28 June 2012 8:52 PM
Subject: 'First contact' cleaning reagent. was: Removable glue for optics
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Has anybody tried this 'First contact' reagent for cleaning the front
lenses of objectives? In theory, it should be perfect to clean e.g.
concave lenses with narrow diameter without leaving residues.
However, it contains acetone as a solvent, so I am wondering how the
objective's glue is going to respond to that. Does this pose a risk or
are current day objectives acetone resistant? The list of components
from the MSDS:
FORMAL GLYCOL 10-40%
BIS(METHOXY)METHANE 10-30%
ETHYL ALCOHOL 30-50%
ACETONE 10-30%
ETHYL LACTATE <10%
ETHYL ACETATE <10%
Cheers,
Steffen
On 27.06.2012 19:52, Craig Brideau wrote:
> *****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> *****
>
> Are you referring to "First Contact"? It's a sort of polymer goo. I first
> saw it at Photonics West and picked up a bit to try around my lab for
> cleaning really dirty mirrors. It seems to work fairly well on things like
> grease, fingerprints and dust. It does have some glue-like properties when
> it dries, but doesn't have a lot of hold strength (so you can peel it off
> to clean the optic!) so may not work great as a glue. On the other hand,
> it may be just sticky enough to work as a temporary solution. If you have
> a large contact area I think it would hold fairly well. Do note that it
> doesn't play well with many plastics because of the solvents used to keep
> the polymer liquid for the initial application...
>
> Craig
>
>
>
> On Wed, Jun 27, 2012 at 3:29 AM, Horn Thomas<[log in to unmask]>wrote:
>
>> *****
>> To join, leave or search the confocal microscopy listserv, go to:
>> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
>> *****
>>
>> Hi Tobias,
>> A colleague showed to me a polymer that is made to clean optical surfaces.
>> It works like a glue: you pour it onto the surface, it polymerizes and then
>> you peel it off like silicon with all the dirt and dust. So it should work
>> temporarily like also as an adhesive to stick a mirror to another surface.
>> The advantage is, its made for optics so it will not harm any coatings or
>> delicate surface. See link below
>> Best regards,
>> Thomas
>> ETH
>> Basel
>>
>>
>> No commercial interest
>>
>>
>> http://www.photoniccleaning.com/products/#original solutions
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Confocal Microscopy List [mailto:[log in to unmask]]
>> On Behalf Of Mark Cannell
>> Sent: Montag, 25. Juni 2012 17:45
>> To: [log in to unmask]
>> Subject: Re: Removable glue for optics
>>
>> *****
>> To join, leave or search the confocal microscopy listserv, go to:
>> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
>> *****
>>
>> Three thoughts:
>>
>> PVA blobs which can be peeled after setting or hot glue (stronger -harder
>> to peel). Nail varnish is good too. I've used all 3 but YMMV depending on
>> area of contact etc.
>>
>> HTH
>>
>> Mark
>>
>>
>> On 25/06/2012, at 4:38 PM, Tobias Rose wrote:
>>
>>> *****
>>> To join, leave or search the confocal microscopy listserv, go to:
>>> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
>>> *****
>>>
>>> Dear all,
>>>
>>> I need to glue some glass optics onto anodized aluminum surfaces (edges
>> of coated dichroic mirror surface and of a full reflective silver mirror).
>> The problem is that I'd like to be able to remove the mirrors at some point
>> without completely ruining their reflective surfaces and leaving too much
>> residue on the glass and aluminum.
>>> The glued parts are not in the optical path so the glue does not have to
>> be transparent. Also the glue can be quite weak, just enough so that the
>> mirrors don't fall off.
>>>
>>> Can anyone suggest a nice glue for that?
>>>
>>> Best,
>>> Tobias
>>
>
--
------------------------------------------------------------
Steffen Dietzel, PD Dr. rer. nat
Ludwig-Maximilians-Universität München
Walter-Brendel-Zentrum für experimentelle Medizin (WBex)
Head of light microscopy
Mail room:
Marchioninistr. 15, D-81377 München
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