Water Test Kit Refill - Replacement OTO Chlorine Test and Phenol Red Solutions

This Test Kit Refill is for use with Hydrotools Model 8410 and 8420 test kits.

• One (1) each ½ ounce bottle of Phenol Red pH level test solution
  
• One (1) each ½ ounce bottle of OTO Chlorine/Bromide level test solution
• Part #8450