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  #11  
Old 23rd August 2019, 09:56 AM
alexmuir alexmuir is offline
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Thanks Michael. I have one that I bought for Cyanotypes. I will dig it out tonight. I managed to clean the accessible glass quite easily with Isopropyl Alcohol, followed by ROR. The alcohol can leave a light residue on the glass, but removes all trace of the fungus. The annoying thing is that the forward sections of the lens came apart with ease, but the rear wouldn’t budge. I’m in the process of re-assembly, and will see how it performs. The lamp should kill the remaining traces of fungus in the inaccessible area.
Alex


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  #12  
Old 27th August 2019, 12:49 PM
John King John King is offline
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Quote:
Originally Posted by alexmuir View Post
Thanks Michael. I have one that I bought for Cyanotypes. I will dig it out tonight. I managed to clean the accessible glass quite easily with Isopropyl Alcohol, followed by ROR. The alcohol can leave a light residue on the glass, but removes all trace of the fungus. The annoying thing is that the forward sections of the lens came apart with ease, but the rear wouldn’t budge. I’m in the process of re-assembly, and will see how it performs. The lamp should kill the remaining traces of fungus in the inaccessible area.
Alex
I use isopropyl alcohol for a multitude of things and have yet to see any residue on the glass, or for that matter any surface.

What purity are you using? It seems to be more commonly available as a 95% purity but what I use is guaranteed to be 99.8% pure.
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Old 27th August 2019, 12:52 PM
alexmuir alexmuir is offline
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Hi John. It’s 98% if I recall.
Alex


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