Powder reagents for free chlorine (100 tests). Contains: 100 sachets

T-2 Tetraol, 50µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 34114-99-3

n-Hydrocarbon Mix C8 - C40

n-Eicosane-d42,neat,neat,500mg,