OTO 250ml (Orthotolidine Test Solution) is a reliable liquid reagent used for measuring free chlorine levels in swimming pools and water treatment systems. Simply add a few drops to a water sample to get a quick and accurate color change indication of chlorine concentration. This 250ml bottle size is perfect for regular pool maintenance and water quality monitoring.
Key Features:
Accurate free chlorine testing with OTO reagent
Easy-to-use liquid form, 250ml bottle
Suitable for swimming pools, spas, and water treatment plants
Helps maintain safe and balanced chlorine levels
Compact and convenient for routine testing