
Quick overview
- Measures cyanuric acid Reads the stabilizer level in parts per million, the number that decides how well your chlorine survives sunlight.
- Turbidity method The reagent clouds in proportion to the cyanuric acid present, and the vial is read against that.
- Purpose made vial The test vial is designed for a positive readout rather than a vague judgment call.
- 8 oz of reagent Enough solution for a full season of regular stabilizer checks.
- Instructions included Supplied in a styrene box with a clear top, with instructions in the case.
- Pentair part R151226 Sold by Pentair as the number 79 specialty test kit.
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Product details
The Pentair R151226 is the number 79 specialty test kit, made to measure cyanuric acid. It comes with 8 oz of reagent and a test vial designed to give a positive readout, packed in a styrene box with a clear top and instructions.
Why test cyanuric acid
Cyanuric acid is the stabilizer that protects free chlorine from ultraviolet light. Without it, an outdoor pool can lose most of its chlorine in a single sunny day. With too much of it, the chlorine that remains reacts more slowly and the pool needs a higher reading to hold the same sanitizing power. Neither problem shows up on a normal chlorine test, which is why stabilizer gets its own kit.
How the test works
The reagent reacts with cyanuric acid to cloud the sample, and the degree of cloudiness is proportional to the concentration. That is why the kit is listed under both cyanuric acid and turbidity, and why the vial is shaped for a clear cut reading rather than a guess.
When to use it
Check stabilizer at opening, after any addition of stabilized chlorine, and after heavy rain or a large water replacement. Cyanuric acid does not break down on its own, so the only way the level comes down is by diluting the pool.
| Brand | Pentair |
|---|---|
| Manufacturer part number | R151226 |
| UPC | 788379002411 |
| Kit number | #79 |
| Type | Specialty test kit |
| Test parameter | Cyanuric acid, turbidity |
| Reagent | 8 oz |
| Packaging | Styrene box with clear top, instructions included |
| Shipping weight | 1 lb |
| Ships | Parcel |
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