• Easy to use UV tester reptile card measures the intensity of the UVB & UVA rays of a UV fluorescent lamp.
• Card changes colors from White to Purple based on the UV ray strength.
• 2-Pack durable plastic card, credit card size.
• New high tech, non-toxic, environmentally friendly detection material that is printed on the card to measure the UVB/UVA rays of UVB lamps.
• Can be used over and over again up to 500 times.

Size: 3.4″ x 2.1″ 2-Pack