Mixed-Parameter quality control standard for wastewater parameters, low range. Components of the standard solution are traceable to SRM from NIST. COD – 50 mg/L PO4-P – 1.0 mg/L NH3-N – 1.0 mg/L NO3-N – 6.0 mg/L TN – 7.0 mg/L Applicable for TNTplus…

Mixed-Parameter quality control standard for wastewater parameters, high range. Components of the standard solution are traceable to SRM from NIST. COD – 500 mg/L PO4-P – 10.0 mg/L NH3-N – 25.0 mg/L NO3-N – 25.0 mg/L TN – 50.0 mg/L Applicable for…

Mixed standard includes: Copper: 2.5 mg/L Iron: 1.5 mg/L Manganese: 5 mg/L

Mixed standard includes: Copper: 1 mg/L Iron: 0.3 mg/L Manganese: 0.1 mg/L