Unlike gold, silver is assayed using a

process known as “potentiometric titration”.

A sample will be scraped from the item

to be assayed which weighs between

50 and 250 milligrams. The sample is

then weighed using a highly accurate

balance and dissolved in nitric acid.

In order to determine the silver content,

potassium chloride is added to the

sample and the electrical conductivity

of the solution is tested until the point

that the “titration” is complete and all of

the silver has become silver chloride. The

amount of potassium chloride needed to

get to this point indicates the amount

of silver that was in the original sample.   www.750jewellery.com