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Hot Tub Models
Star Series
Jewel Series
2026 Spa Catalog
Swim Spas
Parts, Accessories, and Chemicals
Benefits
Health & Wellness
Fitness
Lifestyle
Social
Features
Shell
Cabinet
Hydrotherapy
Insulation & Efficiency
LED Lighting
Sound System
Ozonator
Pure Water Management System
SaltFresh H20
Stainless Steel Jets
Hard Covers
Spa Touch 4 Topside Control
About QCA Spas
About Us
Construction & Innovation
Patented Features
Warranty & Safety
Made In The U.S.A
Reviews
Register Your Warranty
Support
Contact Us
Warranty Registration
Find a Dealer
Owner's Manuals
Spa Water Maintenance
2026 Catalog
Dealer Promos & Resources
Become a Dealer
Find a Dealer
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QCA Pools and Spas
1/2 OZ OTO REAGENT INDICATOR SOLUTION REPLACEMENT 1
1/2 OZ OTO REAGENT INDICATOR SOLUTION REPLACEMENT 1
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OTO Reagent Indicator Solution Replacement for testing swimming pool water.
This 1/2 oz bottle is the replacement indicator solution for OTO (#1) for the test kit, item #22270.
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