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Wastewater Standards

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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Silver, 1,000 µg/mL, for AA and ICP (250 mL) Silver, 1,000 µg/mL, for AA and ICP (250 mL)
SKU: PLAG2-2T

Silver, 1,000 µg/mL, for AA and ICP (250 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
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  • Top rated
Silver, 1,000 µg/mL, for AA and ICP (30 mL) Silver, 1,000 µg/mL, for AA and ICP (30 mL)
SKU: PLAG2-2M

Silver, 1,000 µg/mL, for AA and ICP (30 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
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pH 9 Certified Buffer Standard, 9 SI Units in H2O (500 mL) pH 9 Certified Buffer Standard, 9 SI Units in H2O (500 mL)
SKU: PH-BUFF9-500

pH 9 Certified Buffer Standard, 9 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 9 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 8 Certified Buffer Standard, 8 SI Units in H2O (500 mL) pH 8 Certified Buffer Standard, 8 SI Units in H2O (500 mL)
SKU: PH-BUFF8-500

pH 8 Certified Buffer Standard, 8 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 8 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 7 Certified Buffer Standard, 7 SI Units in H2O (500 mL) Yellow in color pH 7 Certified Buffer Standard, 7 SI Units in H2O (500 mL) Yellow in color
SKU: PH-BUFF7-500

pH 7 Certified Buffer Standard, 7 SI Units in H2O (500 mL) Yellow in color

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  • Brand Spex
  • Concentration 7 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 6 Certified Buffer Standard, 6 SI Units in H2O (500 mL) pH 6 Certified Buffer Standard, 6 SI Units in H2O (500 mL)
SKU: PH-BUFF6-500

pH 6 Certified Buffer Standard, 6 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 6 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 5 Certified Buffer Standard, 5 SI Units in H2O (500 mL) pH 5 Certified Buffer Standard, 5 SI Units in H2O (500 mL)
SKU: PH-BUFF5-500

pH 5 Certified Buffer Standard, 5 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 5 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 4 Certified Buffer Standard, 4 SI Units in H2O (500 mL) Red in color pH 4 Certified Buffer Standard, 4 SI Units in H2O (500 mL) Red in color
SKU: PH-BUFF4-500

pH 4 Certified Buffer Standard, 4 SI Units in H2O (500 mL) Red in color

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  • Brand Spex
  • Concentration 4 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 3 Certified Buffer Standard, 3 SI Units in H2O (500 mL) pH 3 Certified Buffer Standard, 3 SI Units in H2O (500 mL)
SKU: PH-BUFF3-500

pH 3 Certified Buffer Standard, 3 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 3 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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pH 2 Certified Buffer Standard, 2 SI Units in H2O (500 mL) pH 2 Certified Buffer Standard, 2 SI Units in H2O (500 mL)
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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PH BUFFER STANDARD 11 PH BUFFER STANDARD 11
SKU: PH-BUFF11-500

PH BUFFER STANDARD 11

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 11 SI Units
  • Matrix H2O
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pH 10 Certified Buffer Standard, 10 SI Units in H2O (500 mL) Blue in color pH 10 Certified Buffer Standard, 10 SI Units in H2O (500 mL) Blue in color
SKU: PH-BUFF10-500

pH 10 Certified Buffer Standard, 10 SI Units in H2O (500 mL) Blue in color

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  • Concentration 10 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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