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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: S-1522

Diethylamine; 1000 µg/mL in methanol P&T; 1 mL

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  • Brand Spex
  • Matrix methanol P&T
  • Concentration 1000 µg/mL
  • Certification Single
SKU: RB-MMA-1

Mixed Mineral Acid 2% HNO3 + 0.5% HF Reagent Blank

  • CCL
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  • Brand HPS
  • Certification Single: Gravimetric
  • Matrix 2% HNO3 + 0.5% HF
SKU: RB-HNO3-5

5% Nitric Acid Reagent Blank

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  • Brand HPS
  • Certification Single: Gravimetric
SKU: RB-HNO3-2

2% Nitric Acid Reagent Blank

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  • Brand HPS
  • Certification Single: Gravimetric
SKU: RB-HCL-5

5% Hydrochloric Acid Reagent Blank

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  • Brand HPS
  • Certification Single: Gravimetric
SKU: RB-HCL-2

2% Hydrochloric Acid Reagent Blank

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  • Brand HPS
  • Certification Single: Gravimetric
SKU: RB-H2O

D.I. 18 Megaohm Water Reagent Blank

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  • Brand HPS
  • Certification Single: Gravimetric
  • Top rated
SKU: PLBLK-HNO3

Nitric Acid Blank (500 mL) in 5% HNO3

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  • Brand Spex
  • Matrix 5% HNO3
  • Concentration Blank
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Blank Confirmed by density & ICPMS Impurities
  • Top rated
SKU: PLBLK-HCL

Hydrochloric Acid Blank (500 mL) in 5% HCl

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  • Brand Spex
  • Matrix 5% HCl
  • Concentration Blank
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Blank Confirmed by density & ICPMS Impurities
SKU: PH-BUFF12-500

PH BUFFER STANDARD 12

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 12 SI Units
  • Matrix H2O
SKU: PH-BUFF11-500

PH BUFFER STANDARD 11

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 11 SI Units
  • Matrix H2O
SKU: PH-BUFF2-500

pH 2 Certified Buffer Standard, 2 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 2 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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