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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: 34-A

2,6-Dinitrotoluene

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 346L

Dichlorodifluoromethane

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 339-M

Decafluorobiphenyl 2000ppm in Methylene Chloride

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  • Brand NSI
  • Matrix Methylene Chloride
  • Concentration 2000ppm
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 339A

Decafluorobiphenyl 1000ppm in Acetone

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  • Brand NSI
  • Matrix Acetone
  • Concentration 1000ppm
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 338H

Propionitrile

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 330-M

2,4-Dichlorophenoxyacetic acid

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 327ME

Vinyl acetate

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 321H

tert-Buytl formate

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 302-M

2,6-Dichlorophenol

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 300L

Pentachloroethane

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 2W

Acrolein

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 295H

Phenacetin

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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