Phosphorus Test Kit

1. Specification

Name: Phosphorus Test Kit

Model: LH2020

Type: semi-quantitative

Color reaction: none - blue

Gradation: 0.03-0.06-0.1-0.15-0.2-0.3-0.4-0.5mg/L

Packaging detail: 25units/box

Shelf life: at least 1 year

2. Feature

Quick and easy

Operating in accordance with the instructions, users can complete the phosphorus test independently without specialized training. 10 minutes is enough to complete the analysis of one water sample.

Accurate and reliable

This method equals to the standard method that is the molybdenum blue spectrophotometric method (“water and wastewater monitoring and analysis methods" (4th edition)). The principle is that phosphate reacts with ammonium molybdate and potassium antimonyl tartrate to generate phosphorous-molybdenum heteropoly acid, which is reduced to a blue complex by ascorbic acid

Quantitative packing

The kit can be used for 25 tests. It is small, light and easy to carry.

3. Operation

1) Fill the tube with testing liquid to 15mL, add reagent I, add reagent II after 30s, and sway to well-distributed, wait for 10 minutes.

2) Compare the shown color with the colorimetric chart.

Note: temperature of testing liquid must be 10-30ºC.

4. Application areas
This product can be used in total phosphorus analysis of surface water, fishery water, sea water, irrigation water, domestic sewage and industry wastewaters coming from many industries such as daily chemical, fertilizer, treatment of phosphating metal surface, pesticides, steel and coking.

5. Background of development

Sources of phosphorus

Phosphorus presents in natural water and wastewater almost in the form of various kinds of phosphates, which are divided into orthophosphate, condensed phosphates (pyrophosphate, metaphasphate and multi-phosphate) and phosphate combined of organic. They mainly exist in solution, humus particles or aquatic organisms.

Significance of phosphorus test

There is a trace amount of phosphate in natural water, but domestic sewage and industrial wastewater coming from industries such as fertilizer, smelting, and synthetic detergent usually contains a large amount of phosphorus. Phosphorus is one of the essential elements for organisms to growth. But if the concentration in water is too high (excess of 0.2mg/L), it can cause algae overgrowth until the number reached hazardous level (known as eutrophication), resulting in reduced transparency and deterioration in water quality of the rivers and lakes.