A UV-C lamp doesn't guarantee the dose reached every surface — shadows and angled faces can fail silently. A dosimeter card is a peel-and-stick indicator that changes colour at known doses, giving you visible, on-the-spot evidence that germicidal UV-C was delivered. Place them around the room or inside the cabinet, run the cycle, read the colour. Audit-ready validation for any 254 nm device.
Every UV-C device on this site disinfects by delivering a dose — and an inspector's first question is "how do you know it did?" A dosimeter answers that for a few pence: stick one where you're worried about shadowing, run the cycle, and the colour change is your record. Use them to commission a new UV-C tower or cabinet, to spot-check that lamps haven't aged below spec, and to build the validation evidence that turns "we run UV-C" into "here's proof every cycle hits the target dose."
Self-adhesive colour-changing cards for the optimal 254 nm germicidal wavelength. Single-use; supplied 25 to a bag, minimum order 200 units (8 bags).
Single use only — do not reuse. Store at room temperature in the original packaging, away from direct sunlight. Read the colour change immediately or within 24 hours of the cycle.
Dosimeters are the proof layer for our UV-C range — surface towers, object cabinets and in-duct systems. Work out the dose you need with the calculator, then verify you hit it with a card.
Tell us which UV-C devices you're validating and roughly how many cards you'll get through — we'll quote the right dosimeter and volume, priced in your currency. Minimum order 200 units.