Hydrotools Replacement 0.5 Oz OTO Chlorine Test & Phenol Red Solutions
$7.99
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Swimline swimming pool water test kit refills for Hydrotools Model 8410 and 8420 test kits with OTO and Phenol Red solutions in 1/2 ounce bottles One (1) each 1/2 ounce bottle of Phenol Red pH level test solution One (1) each 1/2 ounce bottle of OTO Chlorine/Bromide level test solution Replacement solutions for Model 8410 and 8420 Hydrotools Test Kits Hydrotools part # 8450
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