Reactive Phosphorus Test ‘N Tube™ Kits

The Hach Reactive Phosphorus Test ‘N Tube™ system provides a streamlined, highly accurate solution for measuring reactive phosphorus (orthophosphate) in water samples. Designed for ultimate convenience and safety, these pre-measured, ready-to-use reagent vials eliminate the need for complex chemical mixing and greatly reduce the risk of handling errors or chemical exposure.

To perform a test, simply add your water sample to the vial, react, and read the results using a compatible photometer or spectrophotometer. This fast, consistent method is widely trusted by municipal water facilities and environmental laboratories for routine water quality monitoring, strict regulatory compliance testing, and tracking the nutrient pollution that leads to harmful algal blooms.