Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information.
*Shelf life: 2 yrs
Full Test Instructions PDF
Gold Testing
Acids for determining 18k
gold karat values
To successfully complete the steps to determine 18k
gold karat values, it is necessary to have:
18k Gold testing acids
Testing stones
First step: The testing stone to use has
to be thoroughly cleaned with
test acid neutralizers. Using water to wash the testing stones is not
as accurate.
Second step: Scratch the gold piece on the
testing stone and then apply
over the rubbed area the 18k acid.
Reading the results: If the color
left by the gold scratch on the stone disappears in less than 30
seconds, then the gold piece tested is less than 18K. If the color
remains firmly under the solution on the testing stone, then the gold
piece is 18k or higher.