Metals Mix #1

3-Nitrobiphenyl,100 µg/mL,toluene,1mL,

Reagent kit for 45 tests (Free & total chlorine HR) Contains: 1 x 115 mL DPD0, 1 x 20mL DPD1, 1 x 20mL DPD3

Vanillic acid, 100mg