Isopropanol should be safe, David. The lens cleaner we use here to remove
immersion oil from coated microscope lenses is a mixture of water,
isopropanol and acetic acid. I use it routinely to clean camera lenses and
filters with no ill effect.
On Thu, Mar 27, 2014 at 1:02 PM, David Irisarri <zuiko3000@xxxxxxxxx> wrote:
> Thank you so much for your ideas!!! OMG, I never had this problem before!
> it's really hard to remove it. I also was afraid of removing the coating
> with aggressive products. That's why I am double checking. It's certainly
> an expensive filter and I don't want to mess it up!
> Is isopropanol safe? Is there any risk of removing the coating?
> On Thu, Mar 27, 2014 at 12:38 PM, Ken Norton <ken@xxxxxxxxxxx> wrote:
> > > I wonder if someone could tell me how to remove grease from a filter. I
> > > have a B+W filter and I was using it the other day at the beach, I had
> > sun
> > > screen on my hands and the filter is basically full of grease. I have
> > > tried to remove the grease with a cloth and gentle soap but it's almost
> > > impossible to clean it! Is there any good product to clean lenses and
> > > filters?
> > I'm a fan of Dawn dishwashing soap. That usually works pretty well.
> > Most of the modern dishwashing soaps contain digestive enzymes in them
> > that take care of organic-based oils. But the old tried and true Dawn
> > or Ivory tend to be better with petroleum based oils. YMMV
> > Sunscreen is a beast to get off camera gear. Almost as bad as bug goop.
> > --
> > Ken Norton
> > ken@xxxxxxxxxxx
> > http://www.zone-10.com
> > --
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