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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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Full Organics Set Full Organics Set
SKU: QCO-062K

Full Organics Set

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

EPA Organics Set

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Chlordane (Total) - Blind NPW - Chlordane (Total) - Blind
SKU: QCO-024-2B

NPW - Chlordane (Total) - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Chlordane (Total) NPW - Chlordane (Total)
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
NPW - Acids - Blind NPW - Acids - Blind
SKU: QCO-022B

NPW - Acids - Blind

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

NPW - Acids

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

NPW - PCB in Water - Blind

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  • Brand NSI
  • Matrix Water
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - PCB in Water NPW - PCB in Water
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
FOGs by IR - Blind FOGs by IR - Blind
SKU: QCI-199B

FOGs by IR - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
FOGs by IR QC CRM FOGs by IR QC CRM
SKU: QCI-199

FOGs by IR QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Salinity - Blind Salinity - Blind
SKU: QCI-198B

Salinity - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Salinity QC CRM Salinity QC CRM
SKU: QCI-198

Salinity QC CRM

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