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Hi Geoff
Thanks - I already have some 99% IPA for cleaning eyepieces. I had to take my book on cleaning optics with me to the Chemists, before they would supply me with a bottle. I guess they wanted to make sure I wasn't going to imbibe the stuff.
The 99% IPA does not contain any oils and such other stuff that is not good for optics.
Cheers
Dennis
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