Calibration is performed by our partner Sentech in California. Please visit their website for payment and include the calibration form when shipping your ACE XS.
https://isoberusa.com/calibration/
Overtime the sensor in the device can be affected by temperature, humidity, saliva and residue build up. This can cause it to report too low or too high of a BAC. Regular calibration ensures you get accurate results.
We recommend having your device calibrated after 500 tests or after 12 months, whichever comes first.
Calibration of your device costs $30 + shipping. This price includes return shipping within the United States.
Calibration must be performed by a trained technician on specialized, certified machinery.
SENTECH USA INC
13001 Los Nietos Rd.
Unit #S02
Santa Fe Springs CA 90670