I see a lot of deposits on the surface of the holographic grating plate used in the Perkin Elmer UV-Vis spectro-photometer. Is there any possible way to clean the same? Thanks for your time.
Pranab, at first never touch the grating surface by hands! Never! If you have dust contamination, try to blow them out by clean, CLEAN, pressed air or other gas as nitrogen. It is better to limit yourself by such cleaning method. Only if contamination produce strait light that decrease resolution of your instrument you should go further.
Next step could be using of pure isopropanol or ethanol to gently distribute it on grating surface and remove it by clean gas flow.
Important: before using pressed air take optical mirror and direct air on it without movement air during a couple minutes and than carefully examine air exposed zone, if you see some difference between it and adjacent zone, don't use this gas.
Similar situation is with cleaning liquid. Put one droplet of it on the mirror and after drying carefully examine it. If you see the traces on its surface, don't use this liquid.
Thank you very much for your suggestion. But, I just wanted to know which chemical (solvent) do they use to clean it in case the deposits is high. Can I use the research grade Methanol to clean it? Thanks for your time.
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