The pen-style pocket tester delivers accurate and reliable measurements of free chlorine. With true one-handed operation, it’s easy to use—simply press a button and dip the pen in the solution. The LCD provides a quick measurement reading and alternate temperature reading in both “Live” and “Hold” measurement modes. The fully-encapsulated electronics are shock resistant and the waterproof body is crafted from anodized aircraft aluminum for excellent durability. SpecificationsStripsand Kits Measurement Points: 0 to 10 ppm Stripsand Kits Test: Chlorine Description: Ultrapen Chlorine Tester