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The Valterra Blue Devil Phenol Red Solution is a 1/2-ounce reagent refill designed for use with Blue Devil Test Kits to measure the pH levels in swimming pools and spas. Regular monitoring of pH is essential to maintain water balance, ensuring both bather comfort and the effectiveness of sanitizers. To use, add the Phenol Red solution to your water sample as directed by your test kit's instructions, and compare the resulting color to the provided chart to determine the pH level. This solution is compatible with existing Blue Devil Test Kits. Highlights Accurate pH testing – Designed for use with Blue Devil Test Kits to ensure precise pool and spa water analysis. Easy-to-use reagent – Simply add to your water sample and compare the color to the test chart for quick results. Maintains water balance – Helps monitor pH levels to prevent corrosion, scaling, and swimmer discomfort. Convenient refill size – Comes in a 1/2-ounce bottle for easy storage and regular testing. Essential for pool and spa care – Ensures proper pH levels for a safe and comfortable swimming environment.
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🇺🇸 Ship from USA · On Agora since 2026
$8.99