Standards, Enviro, TOC Stds Kit 6, 40 mL (0,1,2,30 ppm C)

4 x 40 ml TOC VOA vials containing KHP (as C) in water with 0.05% HCl in the following concentrations: blank, 1 ppm, 2 ppm, 30 ppm. Expiration date: 24 months.