Water analysis test strip S0420

pHphosphatefor water

This product can be used for the detection of phosphate (PO43-) in water (fish ponds, fish tanks, drinking water and its sources, well water, surface water, swimming pool water, warm spring water, mineral water, industrial wastewater, domestic sewage, agricultural discharge, seawater, etc.). 【 Limitations 】 1. The test results of this product are semi-quantitative. 2.The result of measuring 500mg/L of this product is likely to contain phosphate with a concentration greater than this. It is recommended to dilute the sample with pure water before testing. 3. Limitations: The determination of phosphate can be influenced by the level of dissolved oxygen in water. Under conditions of sufficient oxygen, the determination of phosphate may be affected by oxidation, leading to higher measurement values. The impact can be reduced by thoroughly stirring the water sample or saturating it with dissolved oxygen before measurement. pH value is one of the factors that affect the results of phosphate determination. Under different pH conditions, the form and solubility of phosphate will change, thereby affecting its determination results. Therefore, when determining phosphate, the pH value of the sample should be adjusted according to the characteristics of the water sample to obtain accurate measurement results. Phosphates, nitrates, and organic compounds in water may react with phosphates and interfere with color reactions, leading to measurement errors. Therefore, appropriate pre-treatment methods such as sample filtration, dilution,or the use of special reagents should be adopted based on the characteristics of the water sample to reduce the impact of interferences.