These total chlorine test strips 486638 are used in the Sensafe Exact Micro 7 Photometer and in other water testing micro meters. Spa and swimming pool owners should test for total chlorine in pool water regularly to ensure their total chlorine level is in the proper range of 1.0 - 3.0 ppm. When the total chlorine, which includes residual and combined chlorine, exceeds this amount, it can irritate the eyes, nose and skin. If the total chlorine is too low, it may result in the growth of algae and bacteria, which can make your water unsafe and cloudy.

• TESTS FOR: total chlorine
  
• Compatible with the eXact® Micro 7+ Pool/Spa KIT and other micro meters
  

Note: 
To ensure optimal performance, store your eXact kit in a cool, dry place away from excess heat (below 100F/38C), moisture, and oxidizers such as chlorine and bromine.