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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-491

8270 Tuning Mix

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-482

TCLP Volatiles Mix

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-481

8021 Internal Standards

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-447-25

TCLP Spike Mix

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  • Brand NSI
  • Matrix Methanol
  • Concentration 100 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-443L

Florida TPH Mix

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-443

Florida TPH Mix

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-441

8260 Internal Standards, 2500ppm

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  • Brand NSI
  • Concentration 2500ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-440

8260B Surrogate Mix, 2500ppm

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  • Brand NSI
  • Concentration 2500ppm
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-439

System Performance Check Mix

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-437

Acids Calibration Check Mix

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-436

Polyaromatic Hydrocarbons Mix, varied concentrations

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: C-435

TCL Pesticides Mix

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  • Brand NSI
  • Raw Material >95% min
  • Certification Grav &/ Volumetric w/analytical confirmation
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