Each tray is individually calibrated to your tCheck device. This is necessary because there are very small manufacturing differences from tray to tray. These differences are at the sub-micron level and are not visible to the naked eye but are detectable by the sensitive optics within the tCheck device. In order to maintain the highest level of accuracy, we must calibrate the tCheck device and tray together as a pair.
If your tray is damaged, please order a replacement tray. You will need to send your device back to tCheck for this service.
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