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Pentair R151226 – Cyanuric Acid / Stabilizer Test Kit (#79)
Product Overview
The Pentair R151226 test kit is designed to measure the level of cyanuric acid (also called pool stabilizer) in your swimming pool water. It includes reagents and a testing vessel to provide a reliable numeric reading of stabilizer concentration.
Key Features
- Designed specifically to test cyanuric acid / pool stabilizer levels.
- Kit includes 8 oz of reagent and a clear top box for easy viewing.
- Precise measurement helps you maintain recommended stabilizer levels and optimize pool water chemistry.
Technical Specifications
- Part Number: R151226
- Reagent Volume: 8 oz
- Parameter Tested: Cyanuric Acid / Pool Stabilizer
Applications & Compatibility
This test kit is suitable for in-ground and above-ground pools where maintaining proper cyanuric acid levels is important for sanitizer performance and water clarity. Use alongside standard testing to ensure balanced chemistry.
Usage Instructions
- Collect a representative water sample from mid-depth in the pool.
- Add the appropriate amount of reagent to the sample as per kit instructions.
- Compare the color change or measurement to the color chart included to determine stabilizer concentration (in ppm).
- Based on the reading, add or dilute cyanuric acid in the pool water to achieve the recommended range.
Troubleshooting
- Reading appears too high or off-scale: Double check sample volume, reagent amount and ensure sample is free of debris or turbidity.
- No color change: Confirm reagent is not expired, and procedure was followed accurately.
- Wide variations in repeated tests: Clean the sample container thoroughly and use fresh water sample from the pool for consistency.
Maintenance Tip
Keep the reagents sealed and stored in a cool, dry place out of direct sunlight. Replace the kit if reagent is expired or results become inconsistent. Proper stabilizer measurement helps protect your pool investment and ensures your sanitizer remains effective.

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