Recommended testing conditions
The gemstone should be clean and dry before testing.
However, elaborate cleaning procedures are not normally
necessary
(Fig. 1.6).
The recommended testing temperature is between 23°C –
27°C or 73°F – 80°F. Please allow the gemstone or jewelry
piece to adjust to room temperature prior to testing.
Exposure and/or operating the tester outside the
recommended testing temperatures will affect the result
and performance of the tester.
Operating under Extreme Conditions
In the event that testing is done outside the recommended
operating conditions, the tester must first be calibrated
under the same temperature setting as the testing site. This
calibration is done to ensure the accuracy and consistency
of the testing results.
However please note that the temperature conditions
should be kept between 20°C to 33°C.
Battery information
Do not leave worn out batteries in the battery
compartment as the batteries may corrode, leak, and
damage the tester. Batteries should be removed when the
tester is expected to be stored for any extended period of
time.
Batteries do not have to be removed when the AC adaptor
is in use.
To prevent inaccurate readings, replace with new batteries
if the red LED does not light up after 20 seconds. A test
should not be performed when the battery is low or weak.
Fig. 1.6
