Works.
The product was quickly calibrated
It worked exactly as it should.
No complaints. Fast service.
The service was flexible and fast. It would be good to have a sticker on breathalyzers that shows the calibration date.
It was taken care of very quickly!
Good thing
Fast operation and ready the next day. Also affordable compared to other places in the nearby area.
The job was done as agreed.
Yes it always needs to be calibrated in between if you mean that the result is absolutely reliable ...