Pack Size: box of 100 strips & reagent
Hazard Class /UN Number: Not Restricted
Storage Temp: Room Temperature
Test sticks and reagents for the semi-quantitative determina-tion of ortho-phosphate (PO 4 3û ) in solutions
Gradation of scale: 0-3-10-25-50-100 mg/l PO 4 3- white to blue-green
Only ortho-phosphate is determined. Other phosphates, such as poly-, pyro-, and metaphosphates, have to be decomposed for the determination of total phosphates. Silica (SiO 2 ) contents above 10 mg/l react in the same way giving a blue coloration. Larger amounts of sulphide ions (S 2- ) cause a brown colour of the test field, smaller concentrations cause low results.