Details
Electronic testers need have their electronics checked (calibrated) against known samples.
For model AGT1 you need 14ct
For model AGT3 you need 14ct and 18ct
For model KEE you need 18ct, but also 22ct if you want to test high-carat accurately.
You don't have to buy our samples!
But if you use your own, check that each has a full British hallmark to guarantee the carat.
The sample you use for calibration must be yellow gold, and must be exactly 14ct, 18ct or 22ct otherwise all your tests will give wrong readings.
The weights vary from sample to sample, generally between 0.4g and 0.5g.
Sample size (approx. 0.4g): 14ct - 8 x 8 x 0.5mm, 18ct - 8 x 8 x 0.5mm, 22ct - 8 x 8 x 0.5mm
Our products help you buy, value and sell at auctions and fairs, in the shop, or trading online. We are experts in chemical and electronic test equipment and supply most pawnbrokers, precious metal traders and jewellers in the UK.
We independently collect feedback on behalf of the businesses that work with us. Our platform only reaches out to verified buyers, so you can be sure you’re reading reviews from real customers.
Only customers with proof of purchase can leave a Feefo review. We ensure this by reaching out to buyers straight after their transaction.
We verify that reviews are from genuine customers by matching them to a sale or transaction. People are only invited to leave a review after purchasing from the business.
We verify that reviews are from genuine customers by matching them to a sale or transaction. People are only invited to leave a review after purchasing from the business.
Our products help you buy, value and sell at auctions and fairs, in the shop, or trading online. We are experts in chemical and electronic test equipment and supply most pawnbrokers, precious metal traders and jewellers in the UK.
