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Question
I have an item that I believe might be gold, however it has no distinguishing marks except "acid test" on it. It is part of the piece, not a stamp. What does that mean?
The acid test is a means of quickly determining if a sample is pure gold. With more careful calculation, you can use the test to determine the carat value of the gold being tested. For your particular piece, I can only speculate as to what it would mean. Potentially the piece is a calibration standard that's can be used to compare with tests of other gold samples as a way to quickly gauge purity. That would be my first guess, but I could be wrong. Good luck with your mystery.
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Mike Fulcher
Expertise
I can answer general questions related to all aspects of chemical engineering and material science, and specific questions related to electrochemistry, batteries, and ceramic materials.
Experience
I have over eight years experience in the battery industry, covering Ni-Cd, Ni-MH, Li-ion, Li-ion polymer and Li primary chemistries. I have over four years experience in the field of ceramics processing.
Education/Credentials
BSChE, University of Florida
MSChE, Worcester Polytechnic Institute
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