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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: 100011-2

Cesium at 1,000 µg/mL in 1% HCl

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  • Brand HPS
  • Matrix 1% HCl
  • Concentration 1,000 µg/mL
  • Measured Impurities 67 elements to ppb (product)
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
SKU: 10001-1

Aluminum at 1,000 µg/mL in 2% HNO3

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  • Brand HPS
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 67 elements to ppb (product)
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
SKU: 100010-2

Cerium at 1,000 µg/mL in 2% HCl

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  • Brand HPS
  • Matrix 2% HCl
  • Concentration 1,000 µg/mL
  • Measured Impurities 67 elements to ppb (product)
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
SKU: 56800

Trifluralin

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 55820

Propachlor

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 55800

Propazine

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 55786

Triclopyr

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 55780

Prometryne

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 55760

Prometon

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54634

Metribuzin

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54620

Metolachlor

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54400

MCPP

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