Phosphorus and Phosphate Detection Test Strips, 0-100 ppm [Vial of 50 Strip

Phosphorus and Phosphate Detection Test Strips, 0-100 ppm [Vial of 50 Strip

$24.24

No reagents or field kits needed for tests, all you need is one strip and no chemicals
Easy to use waterproof color chart printed on every vial along with instructions
Distinct color scale with marks at 0, 30, 75, 150, and 300 ppm Phosphate (and 0, 10, 25, 50, and 100 ppm Phosphorus)
Long plastic strips ensure you can keep your fingers away from what is being tested

Quantity	Discount
2+	5 %
10+	9 %
25+	13 %

SKU: PWQ09V50 Category: Water Quality Test Strips
UPC: 649910801132

Description

The Phosphate test strip detects orthophosphate ions and expresses the result as ppm phosphorous. To express the result as phosphate, multiply the result by 3. This test strip has a unique construction for more accurate testing. This strip has a sensitivity of 5PPM Phosphorus. You can learn more about measuring the different kinds of phosphorous and its role in the environment.

Instructions:

Dip the test strip into the solution to be tested for 1 second.
Remove and compare against the color chart after 3 minutes.

Learn about how this test was utilized to determine phosphate concentrations in a Miller-type experiment to produce novel prebiotic compounds.

Additional information

Weight	1.5 oz
Dimensions	4 × 2.75 × 2.75 in

Frequently Asked Questions (FAQ)

Why isn’t the phosphate test strip showing a result even though I know there’s phosphate in my water?

The phosphate test strip is specifically designed to detect orthophosphate, not all phosphate forms. For accurate results, the water sample should also fall within a pH range of 6–9.

These strips measure only within their defined range of 0–100 ppm Phosphate (as P). If the phosphate level is above this range, the strip may not show color development. In fact, once concentrations exceed approximately 100 ppm, the color response decreases, and at around 500 ppm, the test pad may remain completely white — even though phosphate is present.

So, a lack of color does not necessarily mean there is no phosphate. Instead, the reaction pad may be overloaded. Try diluting the sample and retesting.

If sodium phosphate (Na₃PO₄) is being added, ensure the dosage does not exceed 100 ppm (as P) when using these strips.