Keep your pool water balanced with these replacement reagent solutions for Clorox Pool & Spa 3-way test kits. The set includes OTO (Orthotolidine) solution for testing chlorine and bromine levels, and Phenol Red solution for testing pH levels.

• Refill set for Clorox Pool & Spa 3-way liquid drop test kits
• OTO solution tests total chlorine or bromine concentration
• Phenol Red solution tests pH levels (ideal range: 7.2-7.6)
• Color-coded reagents for easy reading
• Two 0.5 fl oz bottles included

Tip: Test pool water at least 2-3 times per week during swimming season for optimal water quality.