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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: MIC-015

Fecal Coliform in Sludge (2 pack)

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
SKU: MIC-010

Standard Plate Count (2 pack)

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
SKU: MIC-004

Enterococcus/Fecal Strep (2 pack)

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
SKU: 1311

4-Methylstyrene

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min
SKU: 1286

Isobutylbenzene

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min
SKU: 1175

Methyl-2-Bromopropionate

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min
SKU: 1407

1-Bromo-2-chloroethane

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min
SKU: 1438

tert-Amyl alcohol

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min
SKU: 197H

2-Methyl-2-Pentanol

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Concentration 20,000 µg/mL in P&T Methanol
  • Raw Material >95% min
SKU: 1379

tert-Amyl methyl ether

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Concentration 2000 µg/mL
  • Matrix Methanol
  • Raw Material >95% min
SKU: 194

2-Fluorobiphenyl

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Concentration 10,000 µg/mL
  • Matrix Methylene Chloride
  • Raw Material >95% min
SKU: 1105

n-Butylbenzene

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Concentration 1000 µg/mL
  • Matrix Methanol
  • Raw Material >95% min
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