Pentair R161025 No.2 OTO Solution, 1-Ounce

Excellent reagent. Works as advertised for chlorine/bromine detection. Good value for the money.

Excelente producto! Me abrió los ojos de la cantidad de cloro que consume mi familia y me llevó a tomar la mejor decisión.

Used for pool.

When I replaced a smaller pool with my current 4x16' above-ground frame pool, I researched pool maintenance and came across a convincing site that said all one needs is liquid chlorine bleach, conditioner, and test kits for both.I already had a Pentair chlorine/bromide and pH test kit, so although it's super basic (don't know the free vs. whatever the other kind of chlorine is), I stuck with it so as not to spend a lot of money on a better one. When I used up the little bottle in the kit I had, I bought this one. It's too big to fit in the box, but it'll last longer.The "system" is working so well that I thought this product was broken because it always showed the chlorine in the good range, but I tested it on plain water and it showed no chlorine, so I think all is well!

Pentair OTO solution is excellent to test chlorine levels daily! Quality product and provides color intensity representing chlorine levels in spa.

Nice because it is a larger bottle

Use it to diagnose well water that should have cl2 feed... I add a couple of drops in a small white cup and look for yellow! Easy

As advertised, well packed, zip lock bag, shrink wrap at neck of bottle/cap, and 11/2024 expiration