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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: 170

2,3-Dichloro-1-propene

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 167

Phenol-d6

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  • Brand NSI
  • Matrix CH2Cl2
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 166

Nitrobenzene-d5

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  • Brand NSI
  • Matrix CH2Cl2
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 165

Phenthoate

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  • Brand NSI
  • Matrix Hexane
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 162

Leptophos

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  • Brand NSI
  • Matrix Hexane
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 161

Dioxathion

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  • Brand NSI
  • Matrix Hexane
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 158

1,4-Dichlorobutane

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 148

3,5-Dichlorophenol

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 147

2,3,5-Trimethylnaphtalene

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  • Brand NSI
  • Matrix Dichloromethane/Benzene
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 144

Anthracene-d10

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  • Brand NSI
  • Matrix Dichloromethane
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 143

Toluene-d8

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 140

Naphthalene-d8

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