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Re: [Phys-l] Stuck powder



A better cleaning is chromic acid (K-dichromate in Sulfuric acid) then ultra pure water (chip mfgs. use this) then a final rinse w/ electronic grade acetone (chip people again) Here's the important part: don't open air dry -- atmospheric water will condense on the glass along w/ dust. If you don't have a clean bench allow to dry under a bell jar w/ initially saturated atmosphere of acetone. I sprayed my spectrosil prisms on kimwipe while under a bell jar. The diff. with regular air dry was verrrrrry noticeable.

bc didn't need to use the oil free vac. system to dry.



On 2010, Jul 17, , at 06:50, chuck britton wrote:

You might try cleaning the glass like a chemist would.
first with the deionized water
then rinse with alcohol and a final rinse with ether.