Poolstyle PS899OTO Supreme Series 0.5OZ OTO Reagent (24241)





The Poolstyle PS899OTO Supreme Series 0.5 oz OTO Reagent, identified by product code 24241, is an essential element for accurate water testing in swimming pools and spas. Specifically designed for use with OTO (Orthotolidine) test kits, this reagent is a common choice for measuring chlorine levels in pool water. Maintaining accurate chlorine measurements is critical for the upkeep of water quality, ensuring safe swimming conditions, and preventing the growth of algae. Poolstyle, a trusted name in pool and spa products, offers this OTO reagent to assist both pool owners and professionals in effectively managing their water chemistry.

Key Features:

  • Chlorine Testing: This reagent is formulated for measuring free available chlorine levels in pool and spa water.
  • 0.5 oz Quantity: Each container includes 0.5 ounces of reagent, providing a sufficient supply for multiple water tests and analyses.
  • Designed for OTO Test Kits: Compatible with OTO (Orthotolidine) test kits, a widely recognized method for assessing chlorine levels in pool water.
  • Reliable and Consistent Results: The reagent is engineered to deliver precise and consistent results, aiding in the maintenance of proper chlorine levels in pool and spa water.
  • User-Friendly: This reagent is easy to use, suitable for both pool professionals and pool owners.
  • Water Quality Control: Monitoring and controlling chlorine levels is essential for pool sanitation, water clarity, and the prevention of algae growth.


  1. Verify that the Poolstyle PS899OTO Supreme Series 0.5 oz OTO Reagent (Model 24241) is compatible with your OTO chlorine test kit.
  2. Follow the manufacturer's instructions for your specific OTO test kit regarding the testing procedure, the required reagent quantity, and the colorimetric scale used for chlorine measurements.
  3. Open the reagent container, taking care not to contaminate the reagent.
  4. Depending on your specific test kit, add the required amount of reagent to your water sample in the testing vial or tube.
  5. Thoroughly mix the reagent and water sample as instructed in your test kit's procedure.

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