Hach Phosphate Test Kit, Model PO-23

This easy-to-use kit provides fast, reliable results. Uses the color disc/ascorbic acid method. Results expressed as mg/L PO4. Includes three reagents, color disc, comparator box, two viewing tubes, bottle, dropper tube, stove and cover, test tube clamp, deionized water, instructions, and carrying case. Kit performs 100 tests.