This 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.
Rainbow Reagent OTO #1 – 16 Oz Bottle – R161056
$8.14
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