Your infection control plan is only as good as its weakest link.

Calibration drift is the gradual loss of accuracy that makes a meter’s readings stray from true pressure. It happens quietly: the value on the display creeps slowly out of alignment by degrees, and there’s no mechanism on the device to alert you it’s happening. This is why an inaccurate reading can be worse than no reading. No reading prompts a check. An inaccurate reading creates confidence in containment that may not be holding. Calibration is the only way to confirm a meter’s readings are accurate, yet many facilities track calibration dates less rigorously than filter changes or barrier integrity. In an audit or HAI investigation, an uncalibrated device or a missing certificate becomes a real liability.