A set of 2 ampoules for dilution into 2 litres of reagent water.Conductivity . 460 µhmos/cm3K . 7.98 mg/L Corrositivity(LangelierIndex) .1.50 Na. 40.2 mg/L Corrositivity (ph) . 6.95Alkalinity as CaCO3 . 40.3 mg/L Total Hardness. 102 mg/L Chloride .