Our standard breathalyser calibration service takes 3-5 working days.
If you have a professional fuel cell breathalyser which is in constant use, you can use our express service; we will calibrate and dispatch your breathalyser on the day we receive it (provided it arrives with us before 12pm). So, if you choose Royal Mail Special Delivery, you can have your breathalyser back within 2 days of sending it to us (for example, send it to us on Monday afternoon, you’ll have it back by 1pm on Wednesday). Please note, the office does not open before 9am.