K-8530 Phosphate

K-8530 Phosphate CHEMets Kit was designed to obtain Phosphate levels from 2-30 ppm.

Replacement ampoules for the K-8530 Test Kit can be found here.

Phosphate Information


Why Choose CHEMetrics Chemets kits?

CHEMetrics Chemets self-filing reagent ampoules are a great way to test for dissolved substances in liquids. These visual test kits allow you to obtain results by measuring the color of the sample according to the color comparators provided with the kit. This unique method allows you to attain results quickly and accurately with minimal contact with potentially hazardous materials.

Safe and Reliable Results

While traditional methods often require multiple steps and thorough preparation, these test kits allow you to obtain dependable results with a few simple steps. By simplifying the testing method, Chemets test kits reduce the potential for operator error. Additionally, each of the ampoules contained in the test kits is vacuum sealed which helps eliminate the problem of obtaining inaccurate results from stale or unstable reagents. These reagents are stored right in the tip of each ampoule and sealed in glass, thereby minimizing direct contact with the chemicals.

What's included:

  • 30 self-filling Ampoules
  • low and high-range comparators 
  • 1 25 mL Sample Cup
  • Instruction Manual


The K-8530 Phosphate Kit was designed to accurately measure the levels of Phosphate in water from 2-30 ppm. K-8530 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.


How to Use:

1. Fill the sample cup to the 25 mL mark with the sample to be tested. 2. Place the ampoule tip-first into the sample cup. Snap the tip and the ampoule will automatically fill.
3. To mix the ampoule, tilt it from side to side, allowing the bubble to travel from end to end. 4. Dry the ampoule and wait 5 minutes for color development.
5. Place the ampoule into the center of the round comparator and hold it toward a source of light, viewing from the bottom. Rotate the comparator until the color below the ampoule shows the closest match. 6. For higher concentrations, use the flat comparator. Place the ampoule between the color standards, moving it along the comparator until you can determine the closest match.

For more detailed instructions, see the link at the bottom of the page.

More CHEMetrics Kits for Phosphate

Product Number Method   Range Price
K8513 Stannous Chloride   0-8.00 ppm or 0-5.00 ppm (depending on reader) $30.00
K5803 Vanadomolybdophosphoric Acid   0-80.0 ppm $30.00
Chemets Kits
Product Number Method MDL Range Price
K8510 Stannous Chloride 0.05 ppm 0-1 & 1-10 ppm $66.00
K8530 Vanadomolybdophosphoric Acid 2 ppm 2-30 ppm $47.00
K8515 Vanadomolybdophosphoric Acid 5 ppm 0-120 ppm $56.00
Product Number Method MDL Range Price
K8510D Stannous Chloride 5 ppm 0-50 & 60-600ppm $71.00
K8510A Stannous Chloride 10 ppm 0-120 & 120-1200ppm $71.00
K8510B Stannous Chloride 20 ppm 0-1000 & 1000-10,000ppm $71.00
K8510C Stannous Chloride 200 ppm 0-30 & 30-300ppm  $72.00



K-8515/K-8530 Instructions

Phosphate Tech Sheet

Phosphate Information


More Information
Manufacturer CHEMetrics
Call For Price No
Gas Phosphate
4-20 mA Output No
Voltage Output None
Power Requirements 4 AAA Batteries
Datalogging No
Warranty 1 Year
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