The HI-93754H-25 is a box of 25 reagent vials for COD, low range.
*This method with chromium-sulphuric acid is officially recognised by EPA for wastewater analysis.
Each box of 25 vials is...
Hach Silica Reagent Set is designed for the determination of silica in water samples across a concentration range of 3-1000 µg/L SiO₂. Commonly used in water treatment, boiler water monitoring,...