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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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Assurance® Interference Check Standard 18 without Mercury for AA & ICP (500 mL) Assurance® Interference Check Standard 18 without Mercury for AA & ICP (500 mL)
SKU: INTER18-500N

Assurance® Interference Check Standard 18 without Mercury for AA & ICP (500 mL)

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration 20,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
Assurance® Interference Check Standard 18 with Mercury for AA & ICP (500 mL) Assurance® Interference Check Standard 18 with Mercury for AA & ICP (500 mL)
SKU: INTER18-500

Assurance® Interference Check Standard 18 with Mercury for AA & ICP (500 mL)

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration 20,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
Assurance® Interference Check Standard 18 without Mercury for AA & ICP (125 mL) Assurance® Interference Check Standard 18 without Mercury for AA & ICP (125 mL)
SKU: INTER18-100N

Assurance® Interference Check Standard 18 without Mercury for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration 20,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
Assurance® Interference Check Standard 18 with Mercury for AA & ICP (125 mL) Assurance® Interference Check Standard 18 with Mercury for AA & ICP (125 mL)
SKU: INTER18-100

Assurance® Interference Check Standard 18 with Mercury for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration 20,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
Assurance® Interference Check Standards without Mercury for AA & ICP (125 mL) Assurance® Interference Check Standards without Mercury for AA & ICP (125 mL)
SKU: INTER-SETN

Assurance® Interference Check Standards without Mercury for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix Multiple
  • Concentration 6,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
Assurance® Interference Check Standards with Mercury for AA & ICP (125 mL) Assurance® Interference Check Standards with Mercury for AA & ICP (125 mL)
SKU: INTER-SET

Assurance® Interference Check Standards with Mercury for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix Multiple
  • Concentration 6,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ICP Analytes B3 (125 mL) ICP Analytes B3 (125 mL)
SKU: INT-B3

ICP Analytes B3 (125 mL)

  • CCL
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  • Brand Spex
  • Matrix 5% HNO3/tr. Tartaric Acid/tr. HF
  • Concentration 100 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ICP Alternate Interferents B (500 mL) ICP Alternate Interferents B (500 mL)
SKU: INT-B2

ICP Alternate Interferents B (500 mL)

  • CCL
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  • Brand Spex
  • Matrix 5% HNO3/tr. Tartaric Acid/tr. HF
  • Concentration 100 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ICP Analytes B1 (125 mL) ICP Analytes B1 (125 mL)
SKU: INT-B1

ICP Analytes B1 (125 mL)

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration 100 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ICP Alternate Interferents A, 1,000 µg/mL (1,000 ppm) (500 mL) ICP Alternate Interferents A, 1,000 µg/mL (1,000 ppm) (500 mL)
SKU: INT-A2

ICP Alternate Interferents A, 1,000 µg/mL (1,000 ppm) (500 mL)

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  • Brand Spex
  • Matrix 5% HNO3/tr. F-
  • Concentration 1,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ICP Interferents A1 (500 mL) ICP Interferents A1 (500 mL)
SKU: INT-A1

ICP Interferents A1 (500 mL)

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration 5,000 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
6 Component ICP Standard in 5% HNO3 6 Component ICP Standard in 5% HNO3
SKU: INFCS-7

6 Component ICP Standard in 5% HNO3

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  • Brand HPS
  • Matrix 5% HNO3
  • Concentration 1,000 µg/mL
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
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