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Environmental Certified Reference Materials and Proficiency Test Standards

Our wastewater standards enhance your testing accuracy and efficiency. Regular use of our certified reference materials (CRMs) and proficiency test (PT) standards ensures high data quality and supports accreditation needs.

We specialize in ISO-accredited CRMs and effluent standards that are stable and integrate seamlessly into routine workflows. Pre-measured, single-use materials help prevent errors and simplify processes. For example, try our GGA Concentrate Snips™: just snip and pour into a 300 mL BOD bottle—no measurements or contamination. Our versatile, multiparameter CRMs streamline testing procedures, reducing the need for multiple CRMs in your lab. Watch the demonstration video to learn more!

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SKU: QCO-093

NPW - Toxaphene

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCO-072

NPW - PCBs in Oil

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  • Brand NSI
  • Matrix Hemp Oil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCO-062K

Full Organics Set

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCO-025K

EPA Organics Set

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCO-024-2

NPW - Chlordane (Total)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCO-022

NPW - Acids

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCO-020

NPW - PCB in Water

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: QCI-129B

SGT - HEM (TPH) Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: MIC-QC5

Quantitative Enterococcus/Fecal Strep

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
SKU: MIC-QC2

Quantitative Coliforms/E.coli/Fecal Coliform

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
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