Breakdown of Bleach Over Time by Storage Temp in Pools

Understanding how bleach potency decreases based on storage conditions is crucial for effective pool maintenance.

Understanding Bleach Degradation

Bleach, commonly used as a pool sanitizer, degrades over time, especially when exposed to unfavorable storage conditions. Factors such as temperature, light exposure, and storage duration can significantly impact its effectiveness.

Impact of Storage Temperature

Temperature plays a pivotal role in bleach stability:

  • Cool Temperatures (Below 60°F / 15°C): Bleach remains relatively stable, with minimal degradation over several months.
  • Room Temperature (60-77°F / 15-25°C): Moderate degradation occurs, with noticeable potency loss over time.
  • High Temperatures (Above 77°F / 25°C): Rapid degradation, leading to significant loss of sanitizing power within weeks.

Best Practices for Bleach Storage

  • Store bleach in a cool, dark place away from direct sunlight.
  • Avoid storing bleach in areas with fluctuating temperatures.
  • Use older bleach stocks first to ensure effectiveness.
  • Regularly check the manufacturing date and avoid using bleach that is over six months old.

Related Terms

  • Liquid Chlorine – A concentrated form of chlorine used for shock treatments or daily sanitization.
  • Sodium Hypochlorite – The liquid form of chlorine often referred to as bleach.
  • Free Chlorine (FC) – The active and available chlorine that sanitizes pool water.

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