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Send it in to the company. It's in the instructions. Check their website. BACtrack www.bactrack.com
Sorry, there was a problem. Please try again later.You send it back to the original company
Sorry, there was a problem. Please try again later.From the manufacturer: . The accuracy of breath alcohol testers can fluctuate after six to twelve months of normal use depending on the number of tests performed and operating conditions. . The product should be recalibrated at least every six to twelve months. If the product is used every day, it may need to be recalibrated as frequently as every month. As of today, the manufacturer's calibration service is ~$20 - 25 for non-expedited service.
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