9-component Low-Level Simulated Rainwater Standard at 27 µS/cm. 5 x 50 mL. Contains: (mg/L) Ammonium at 0.1, Calcium at 0.01, Chloride at 0.25, Fluoride, Potassium at 0.05, Magnesium at 0.02, Nitrate at 0.5, Sodium at 0.2, Sulfate at 2.5 at pH 4 in H2O. pH and Specific Conductance measured at 25 °C. 12 months expiry date. Traceable to NIST 31XX series. ISO 9001:2015 certified, ISO/IEC 17025:2017 and ISO 17034:20166 accredited.
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