Today, I received the following query via email from one of my TrackPro customers.

Good morning Al,

I do not have a question about TrackPro. We are having an internal discussion here and I was wondering what your thoughts were. Do other companies allow for a grace period for calibration due dates. For example, the balance is calibrated every 3 months (+ 15 days). I have seen SOPs written both ways, but without justification or documentation we will not allow a grace period.