Simple Nutrients QC Concentrate CRM

A 21 mL concentrate for determination of Simple Nutrients. Each ampule produces 2 liters of sample. The sample includes: Ammonia as N 1.0 - 20 mg/L, Orthophosphate as P 0.5 - 5.5 mg/L, Nitrate as N 2.0 - 25 mg/L, Nitrate/Nitrite-N 2.5 - 25 mg/L.