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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: CALMIX7-100

Assurance® Instrument Check Standard 7 for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 600 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: CALMIX4-500

Assurance® Instrument Check Standard 4 for AA & ICP (500 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 50 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: CALMIX4-100

Assurance® Instrument Check Standard 4 for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 50 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: CALMIX3-500

Assurance® Instrument Check Standard 3 for AA & ICP (500 mL)

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  • Brand Spex
  • Matrix 5% HCl
  • Concentration 100 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: CALMIX3-100

Assurance® Instrument Check Standard 3 for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix 5% HCl
  • Concentration 100 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: CALMIX10-500

Assurance® Instrument Check Standard 10 for AA & ICP (500 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 500 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: CALMIX10-100

Assurance® Instrument Check Standard 10 for AA & ICP (125 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 500 µg/mL
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
SKU: BD-3515

Tricaprin Glyceride Impurity Standards (1 mL)

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  • Brand Spex
  • Matrix Pyridine
  • Concentration 8,000 µg/mL (8,000 ppm)
  • Raw Material >95% min; as available
  • Certification Single: Grav. &/or Volume w/Analytical Confirm
  • Top rated
SKU: BD-3514

(S)-1,2,4-Butanetriol Glyceride Impurity Standards (1 mL)

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  • Brand Spex
  • Matrix Pyridine
  • Concentration 1,000 μg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. &/or Volume w/Analytical Confirm
SKU: AU-CN-1000

Gold from Gold Metal at 1,000 µg/mL in 0.5% NaCN + 0.1N NaOH

  • CCL
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  • Brand HPS
  • Matrix 0.5% NaCN & 0.1N NaOH
  • Concentration 1,000 µg/mL
  • Raw Material Three 9s as available, no purification
  • Certification Single: Gravimetric w/IC Confirmation
SKU: AU-CN-10

Gold Metal at 10 µg/mL in 0.05% NaCN + 0.1N NaOH (500 mL)

  • CCL
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  • Brand HPS
  • Matrix 0.01% NaCN & 0.1N NaOH
  • Concentration 10 µg/mL
  • Raw Material Three 9s as available, no purification
  • Certification Single: Gravimetric w/IC Confirmation
SKU: AU-CN-1

Gold from Gold Metal at 1 µg/mL in 0.05% NaCN + 0.1N NaOH (500 mL)

  • CCL
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  • Brand HPS
  • Matrix 0.01% NaCN & 0.1N NaOH
  • Concentration 1 µg/mL
  • Raw Material Three 9s as available, no purification
  • Certification Single: Gravimetric w/IC Confirmation
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