Quinmerac metabolite BH 518-4, 25mg

TO-13A Surrogate Standard

Reagent kit for 100 tests (pH and free & total chlorine) Contains: 1 x 20 mL DPD1, 1 x 20 mL DPD2, 1 x 20mL DPD3, 1 x 20mL pH3

4-Amino-2´,3-dimethylazobenzene, certified, 0.25g