Ted and list - "Off-the-shelf" peroxide is about 6% solution -- what you need is at least 30%, which is, I understand, what you get from a scientific company. I have the name of a firm in North Carolina stuck away somewhere, that handles that strength (I also bought some from a beauty supply, which was not strong enough). It is a hazardous material. Bill Maxim, RPT In a message dated 97-01-26 18:48:43 EST, you write: << I'm afraid you're right Will. I spritzed my test ivories with off-the-shelf hydrogen peroxide, covered it with a glass plate and let it stand in the sun for an hour. No effect. The magic marker ink is still there. Ted Simmons >>
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