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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: IS-034

Calcium Hardness CRM

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

Calcium from Calcium Chloride at 1,000 µg/mL in H2O

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  • Brand HPS
  • Matrix H2O
  • Concentration 1,000 µg/mL
SKU: 100029-6

Lithium 6 Isotope at 1,000 µg/mL in 1% HNO3

  • CCL
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  • Brand HPS
  • Matrix 1% 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: VOC-SURR-M3C-A1

3 Component Surrogate Standard Mix, 2,000 µg/mL

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  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 2,000 μg/mL
  • Certification Single: Gravimetric
SKU: VOC-M76C-A1

76 Component Base Neutral & Acid Combination Calibration Standard

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  • Brand HPS
  • Matrix Methylene Chloride
  • Concentration 1,000 µg/mL
  • Certification Single: Gravimetric
SKU: VOC-M60C-1000-A1

60 Component Volatile Organic Combination Mix at 1,000 µg/mL

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  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 1,000 µg/mL
  • Certification Single: Gravimetric
SKU: VOC-M54C-A1

54 Component Volatile Organic Combination Mix

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  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 2,000 μg/mL
  • Certification Single: Gravimetric
SKU: VOC-LM6C-A1

6 Component Purgeable Gases Mix, 200 µg/mL

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  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 200 µg/mL
  • Certification Single: Gravimetric
SKU: VOC-HM6C-A1

6 Component Purgeable Gases Mix, 2,000 µg/mL

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  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 2,000 μg/mL
  • Certification Single: Gravimetric
SKU: 360L

Carbon Tetrachloride

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 363

Carbon disulfide

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