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Phosphate Test Kit Replacement Reagents (50 tests) - HI3833-050

The HI3833-050 are replacement reagents for the colorimetric determination of phosphate with the HI3833 Phosphate Test Kit. There are enough reagents for approximately 50 tests to be used with Hanna’s test kit. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.

  • Pre-made reagents for ease of use
  • Prepared with high purity chemicals
  • Marked with expiration date and lot number for traceability


The HI3833-050 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate phosphate measurements with the chemical test kit. These reagents follow the ascorbic acid method to determine phosphate concentration.

For determination of phosphate, the reagent containing ammonium molybdate and potassium antimonyl tartrate reacts in an acid medium with orthophosphate to form a phosphomolybdate complex. The phosphomolybdate complex is reduced by ascorbic acid, causing a blue colored complex to form; the greater the concentration, the deeper the color. A color comparator cube is included for an accurate, side-by-side, visual analysis to determine phosphate concentration. These reagents are designed to be used with samples that have an expected phosphate range of 0 to 5 mg/L (ppm) PO43-.

Additional information

Weight 0.07 kg



SKU HI3833-050
Name Phosphate Test Kit Replacement Reagents (50 tests) – HI3833-050
Package packets
Quantity 50 tests
Method ascorbic acid


Phosphate Test Kit Replacement Reagents (50 tests) – HI3833-050