Quintiofos, 10 µg/ml, Ethyl acetate, 10.0ml

4-tert-Octylphenol, 100µg/ml in MeOH, 1ml

Benzo(g,h,i)perylene, 10µg/ml in Acetonitrile, 10ml

Powder reagents for total chlorine (25 tests). Contains: 25 sachets