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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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Conductivity Standard at 25 ?ºC at 100 µmhos in H2O (500 mL) Conductivity Standard at 25 ?ºC at 100 µmhos in H2O (500 mL)
SKU: WQC-COND-500

Conductivity Standard at 25 ?ºC at 100 µmhos in H2O (500 mL)

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  • Brand HPS
  • Matrix H2O
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ Wet Chem
Calcium Carbonate Alkalinity Standard at 1,000 µg/mL in H2O (500 mL) Calcium Carbonate Alkalinity Standard at 1,000 µg/mL in H2O (500 mL)
SKU: WQC-ALK-500

Calcium Carbonate Alkalinity Standard at 1,000 µg/mL in H2O (500 mL)

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  • Brand HPS
  • Matrix H2O
  • Concentration 1,000 µg/mL
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
  • Top rated
TRACE METALS II (500ML) TRACE METALS II (500ML)
SKU: WP-3-500

TRACE METALS II (500ML)

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  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
TRACE METALS II (125 mL) TRACE METALS II (125 mL)
SKU: WP-3

TRACE METALS II (125 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
TRACE METALS 1 (125ml) TRACE METALS 1 (125ml)
SKU: WP-15N

TRACE METALS 1 (125ml)

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  • Brand Spex
  • Matrix 5% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
TRACE METALS  (500ML) TRACE METALS  (500ML)
SKU: WP-15-500N

TRACE METALS (500ML)

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  • Brand Spex
  • Matrix 5% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
TRACE METALS 1 TRACE METALS 1
SKU: WP-15-500

TRACE METALS 1

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  • Brand Spex
  • Matrix 5% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
TRACE METALS I TRACE METALS I
SKU: WP-15

TRACE METALS I

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  • Brand Spex
  • Matrix 5% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ALTERNATE METALS I (500 mL) ALTERNATE METALS I (500 mL)
SKU: WP-11-500

ALTERNATE METALS I (500 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
ALTERNATE METALS I (125 mL) ALTERNATE METALS I (125 mL)
SKU: WP-11

ALTERNATE METALS I (125 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
SW 846 ReadyCurve w/o Internal Standards SW 846 ReadyCurve w/o Internal Standards
SKU: WL-729B

SW 846 ReadyCurve w/o Internal Standards

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Appendix IX LCS Spike Mix Appendix IX LCS Spike Mix
SKU: WL-600

Appendix IX LCS Spike Mix

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