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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: C-161L

CLP Acids Surrogate Mix Low (1500ppm)

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  • Brand NSI
  • Concentration 1500ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-161H

CLP Acids Surrogate Mix (7500ppm)

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  • Brand NSI
  • Concentration 7500ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-157

Method 8260 Internal Standards (2500ppm)

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  • Brand NSI
  • Concentration 2500ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-156

TCLP Herbicides Mix

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-143

TCLP Pesticides Mix

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-131M

8270 Acid Surrogate Mix (4000ppm)

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  • Brand NSI
  • Concentration 4000ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-131L

8270 Acid Surrogate Mix Low (2000ppm)

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  • Brand NSI
  • Concentration 2000ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-131H

8270 Acid Surrogate Mix High Level (10,000ppm)

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  • Brand NSI
  • Concentration 10,000ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-109HC

Ketones Mix, 20,000ppm

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  • Brand NSI
  • Concentration 20,000ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-109H

Ketones Mix, 2000ppm

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  • Brand NSI
  • Concentration 2000ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-030-100

2,4,6-Trichlorobiphenyl

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: BTEX-LM6C-A1

6 Component BTEX Standard at 200 µg/mL in Methanol-P&T, 1 mL

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  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 200 µg/mL
  • Certification Single: Gravimetric
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