The K-8515 Phosphate Kit was designed to accurately measure the levels of Phosphate in water from 0-120 ppm. K-8515 uses the Vanadomolybdophosphoric Acid Method. In test kits employing the vanadomolybdophosphoric acid method, phosphate reacts with ammonium molybdate under acid conditions and in the presence of vanadium to form a yellow-colored product. Results are expressed as ppm (mg/L) PO4.
Phosphorus occurs naturally in rock formations in the earth's crust, usually as phosphate. High phosphate concentrations in surface waters may indicate fertilizer runoff, domestic waste discharge, or the presence of industrial effluents or detergents. Although phosphates from these sources are usually poly-phosphates or organically bound, all will degrade to ortho or reactive phosphates with time. Phosphate measurement is used to control scale and corrosion inhibitor levels in boilers and cooling towers. Both methods described below measure reactive phosphate, which will give a positive reaction prior to hydrolysis, and is usually termed ortho-phosphate.
R-8515 Refill Package includes 30 tests and can be purchased separately.
- 30 Ampoules
- 25 mL Sample Cup
- Instruction Manual
How to use:
- Fill to the 25 mL mark in the sample cup with your water.
- Snap the end of the ampoule in the water on the bottom/side of the 25 mL sample cup.
- Mix the contents of the ampoule by tipping back and forth a few times.
- Dry the vacu-vial and wait 5 minutes for color development.
- Place ampoule, flat end first, into the comparator. Hold comparator up to light source and determine best color match.
Phosphate Tech Sheet