To keep costs to a minimum, we carry out calibrations in batches approximately twice a week; on average it will take 4-5 working days to receive your device back after calibration.

If you have a certified breathalyser which is constantly in use, select the Pro-Express service. We will calibrate your device individually as soon as it arrives and provided it arrives with us before 1pm, will return the device on a same-day basis. So if you use Royal Mail Special Delivery, you can have the breathalyser back within 2 days of returning it to us (eg. send it Monday afternoon, you’ll have it back by 1pm on Wednesday)  Please note, the office does not open before 9am.

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