Hanna – Marine Phosphorus ULR Checker® HC: 0 to 200 ppb, plus 6 tests (HI-736)

Ideal for salt water aquariums and coral reef tanks. Specially designed for salt water, the HI-736 Phosphorus Checker will measure vital phosphorus levels – even at exceptionally low range. Checker®HC is supplied with reagents for 6 tests. Use code HI-736-25 (25 tests) for future purchases.