Phosphate test strips, for environmental testing of phosphate levels in water and other liquids, including ground water, wastewater, river and sea water, liquid foodstuffs, soil samples etc. Colour change is from white through to dark blue, depending on level of phosphates present. Indication range is 0-3-10-25-50-100-250-500 mg/L. Supplied as a tube of 100 test strips.
.jpg)