5Pack Quick Uvb Test Sensor Card, Reusable Reptile Uvb Tester Heating Bulb Photochromic Uvb Card Indicator Over 500 Times, Uvb Light Lamp Meter For Sunglass Test & Sterilizing, 3.4X2.1Inch

[ Quantity ] – Including 5-Packs UVB sensor testing card and sleeve, Card is made of new high-tech and non-toxic detection materials.

[ Universality ] – 3.0 ~10.0 UVB bulb and Fluorescent bulb, such heating bulbs that carry ultraviolet rays. it is to measure the UV rays of the UVB lamps.

[ Reusable ] – One UVB test card can be repeatedly used for 500 times, When not in use, you need to put it in a card sleeve or store it in a dark place.

[ Comparative test ] – When using, you can press the part of the card with your finger, and compare the color change of the place receiving light and the place where it is pressed (not receiving light). If there is a color difference, the UVB bulb is normal.

[ Card size ] – 3.4 inch x 2.1 inch, 5 Pack. Lightweight and compact, you can take it anywhere.