Every temperature reading in your diary is only as good as the probe that took it. It’s an easy thing to take for granted — the probe reads a number, you write it down, done — until an officer asks how you know that number is actually right.
The two-point check
Calibration doesn’t need a lab. It needs two known reference points: ice water, which should read close to 0°C, and boiling water, which should read close to 100°C. If your probe reads both correctly, within a small tolerance either side, you can trust it for everything in between. If it’s off on either one, you’ve caught a problem before it quietly skews every reading you take with it.
Why weekly
A probe that’s dropped, knocked, or just getting old can drift gradually — it doesn’t stop working outright, it just becomes slightly, then increasingly, wrong. A weekly check catches that drift early, before it’s had weeks to feed inaccurate readings into your diary without anyone noticing.
Two minutes, genuinely
The check itself is quick: dip, read, record, repeat with boiling water. Rated5 puts it on a real weekly schedule so it doesn’t rely on memory, checks both readings against the correct bands automatically, and — if a probe fails — walks straight into a guided corrective action, including the option to retire the probe from service there and then if it’s not coming back into tolerance.
What it buys you
The value isn’t the two minutes themselves — it’s what they back up. Every fridge check, every cook reading, every delivery temperature in your diary is more defensible with a documented, in-date calibration behind it. It’s a small habit that quietly underwrites everything else you record.