Description

This reusable card can measure ultraviolet (UVB) in 10 seconds. Hold the card under the UVB lamp at the basking site (within 5cm distance to the lamp) to check if the lamp is producing UVB or not.

“Purple” light will be shown on the card under the UVB lamp, and means that the lamp is working.

Replace the bulb annually or sooner if the card doesn’t show any colour, card can be used up to 500 times when used in 10-second increments.