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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-QC17

Quantitative Fecal Coliform in Sludge

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
SKU: MIC-QC16

Quantitative Legionella

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
SKU: MIC-QC15

Quantitative Standard Plate Count

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
SKU: IS-035

Phenols

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
SKU: IS-032

Chlorate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: IS-031

Chlorite CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: IS-030

Bromate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: IS-029

Cyanide (free)

  • CCL
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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: IS-027

Perchlorate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: IS-026

TOC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: IS-025

Cr (VI) CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: IS-024

Cyanide (complex)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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