Pentair R161025 OTO Solution 1 chlorine and bromine test reagent, 1 oz bottlePentair Solution OTO 1 Chlorine/Bromine 1 oz Bottle, R161025 In stock$699
Pentair R161025 OTO Solution 1 chlorine and bromine test reagent, 1 oz bottle
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Pentair Solution OTO 1 Chlorine/Bromine 1 oz Bottle, R161025

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$699
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Quick overview

  • Chlorine and bromine OTO reagent reads both sanitizers, so one bottle covers either pool.
  • Solution 1 The number 1 bottle in the Pentair test kit set, sold on its own for a refill.
  • One ounce A 1 oz bottle, the standard replacement size for a hand held kit.
  • Fresh reagent reads true Test solutions age, and a bottle past its prime is the usual reason a reading stops making sense.
  • For Pentair test kits Intended as the refill for Pentair pool water test kits.
  • Genuine Pentair Factory reagent, part number R161025.
Full description and specifications ↓

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Product details

Pentair R161025 is Solution 1, the OTO reagent used to test chlorine and bromine in pool water. It comes in a 1 oz bottle and is the factory refill for Pentair test kits.

How OTO reads

Orthotolidine reacts with chlorine or bromine and develops a yellow color, deeper as the sanitizer level rises. It is the reagent behind the yellow side of a two column test block, with the pH reading in the other column.

Keep it fresh

Reagents are consumables. Heat, sunlight and age all degrade them, and a tired bottle produces readings that no amount of chemistry will explain. When a test stops behaving the way it used to, replacing the solution is the cheapest first move.

Specifications
Brand Pentair
Manufacturer part number R161025
UPC 788379003050
Type OTO test solution, Solution 1
Tests for Chlorine and bromine
Volume 1 oz
Use with Pentair test kits
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does this solution test?
Chlorine and bromine. OTO is the reagent that turns yellow in the presence of either sanitizer, with a deeper color for a higher level.
Am I buying one bottle or a case?
This listing is the 1 oz bottle. Pentair packs the reagent 48 bottles to a case at the manufacturer level.
Which kits does it refill?
It is the Solution 1 refill for Pentair test kits.
How often should reagent be replaced?
Test solutions lose accuracy with age, heat and sunlight. If readings drift or the color stops developing, start with a fresh bottle before you doubt the pool.
Ask your own question