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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: 125M

Arochlor 1016 1000ppm in Methanol

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  • Brand NSI
  • Matrix Methanol
  • Concentration 1000ug/mL
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 125L-T

Arochlor 1016 50ppm in Oil

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  • Brand NSI
  • Matrix Hemp Oil
  • Concentration 50ppm
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 125L

Arochlor 1016 50ppm in Hexane

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  • Brand NSI
  • Matrix Hexane
  • Concentration 50ppm
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 125H-T

Arochlor 1016 500ppm in Oil

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  • Brand NSI
  • Matrix Hemp Oil
  • Concentration 500ppm
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1234-W

Paraquat dichloride

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1220L

Methyl-tert-butyl ether

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1218H

Ethanol

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1215H

Glyphosate

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1211-A

bis(2-Ethylhexyl)adipate

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1204

Dichloroacetic Acid

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
SKU: 1191M

2,4-Dichlorphenylacetic acid (Free Acid)

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 1191-A

2,4-Dichlorphenylacetic acid (Free Acid)

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