FREQUENTLY ASKED QUESTIONS
How long does the probe last?
Approximately, 1000 tests - but only if the cap is replaced firmly after every
use. In practice, it will give 3 to 4 months of heavy use in a gold-buying shop,
or up to a year if used just occasionally. After a year, it should be replaced.
If the cap is left off for a few hours (e.g. overnight) it
will
dry out.
We strongly recommend that you keep a spare probe in stock.
How long does the battery last?
A few months. If you leave it on (continuously) it will last a week or two.
How often need the probe be calibrated?
Keep the 18ct sample on the plate, touch it every few tests to check the meter
registers “18kt”. At first, you will find it stays in calibration for weeks. As the
fluid in the probe gets used up you will have to calibrate it more often.
Eventually you will have to calibrate it every few tests, this is a sign that the
probe refill will soon need replacing.
What if the meter doesn’t move to the far right upon start up?
Change the battery.
What if it won’t calibrate to the middle of “18kt”?
First, change the battery
. If that doesn’t work, change the probe refill.
Can more than one item be placed on the test plate at once?
Yes. For easy checking you may like to keep the calibration sample on the
test plate all the time. For easy testing you may like to place a few items on
the test plate at once then test them one after the other.
Why is the dial m
arked “Krt” and not “ct”?
Because it
’s American. They use the abbreviation “K” (or “Kt”) for karat
instead of “ct” for Carat (and the manufacturer has mistakenly printed “krt”).
Any reading in the 10krt area indicates 9ct, whether it is lower or higher than
the middle of the 10krt (yellow) area.