by Bart Arondson

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If the envelope of the bulb is glass or quartz and is not coated, near-pure alcohol and a lint-free cloth will do just fine. I use Eclipse and Pec Pads because I have them handy, but ethanol, methanol or isopropanol will work. Small bottles can be had from anyplace that supplies industrial chemicals. Avoid what you find on the shelves a drug stores, as ...

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