- Reliable measurements with color development technology and a robust base material deliver stable, precise water care results for pools and spas. - Immediate visibility: clear color change within 10 seconds and easy interpretation using the included color chart for efficient testing and water quality management. - Individually wrapped protection: 100 spa test strips, each sealed to preserve freshness and responsiveness; packaging technology ensures long-term reliability under intensive use. - Easy to use across a wide range of situations: suitable for pool and spa water testing with simple handling for all common testing needs without complexity. - Use scenarios: ideal for routine home pool and spa maintenance; quick checks before and after spa use; reliable monitoring for small facilities or guest pools.