This Test Kit Refill is for use with Hydrotools Model 8410 and 8420 test kits.
- One (1) eachounce bottle of Phenol Red pH level test solution
- One (1) eachounce bottle of OTO Chlorine/Bromide level test solution
- Part 8450
Water Test Kit Refill – Replacement OTO Chlorine Test and Phenol Red Solutions
Original price was: $3.35.$2.03Current price is: $2.03.
Sale!58 in stock
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