Rainbow Reagent OTO #1 - 16 Oz Bottle - R161056 state_District of Columbia A key advantage of this

A key advantage of this sensor is that it is not affected by the use of any type of Cyanuric Acid stabilizers and/or oxidizers

With its straightforward operation and robust

These superior

Pentair/Rainbow R18608

This is a Century Flex 48 1

Rainbow Reagent OTO #1 - 16 Oz Bottle - R161056 state_District of Columbia A key advantage of thisThis is a 16 ounce bottle of Rainbow Solution OTO #1 which is a replacement used for Chlorine testing in Rainbow Kits 78HR (All in One), 78DPD, 752 (2 in 1) and 756. The 16 ounce bottle is a larger size than what is included in the kits. Larger size bottles are economical and convenient if you are using a lot of reagent.