Drinking Water,  Environmental Reference Materials,  PT Express

Residual Free Chlorine Concentrate – Blind #QCI-012B

A 2.2 mL concentrate for determination of Residual Free Chlorine and Total Residual Chlorine. Formulated in the NELAC range of 0.5 - 3.0 mg/L. Each ampule produces 2 liters of sample. PT Express may take up to 10 business days to ship. read more