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Organic, Inorganic, Microbiology & PT Reference Materials for Environmental Testing

  • Certified for environmental methods (e.g. EPA, Standard Methods, AOAC, ASTM, etc).
  • COA includes certified values for a variety of analytical techniques.
  • Accurate and robust chemical and microbiological certified reference materials.
  • Custom reference material manufacturing capabilities under ISO 17034. Learn More


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Wastewater Standards

Manufactured from the highest purity water and analytically verified neat source materials. Our certified reference materials are ISO 17034 accredited.

Drinking Water Standards

We offer a wide range of Certified Reference Materials (CRMs) for testing applications for your drinking water analysis to ensure environmental and human health.

Soil/UST Standards

Soil and Underground Storage Tank (UST) standards are fundamental regulations established to preserve the environment and human health from hazards associated with underground storage tanks.

SNIP™ Standards

See why NSI SNIP™ standards are the easiest to use control standards for wastewater testing. Offering the only pre-measured, ready-to-use standards, in single-use tubes that require no pipetting. Great for simple error-free use.

Pesticides Standards

There are hundreds of commercial pesticides in use in the world today. From algaecides to virucides, pesticides are used in large quantities in industrial and private agriculture.

PFAS

Per- and polyfluoroalkyl substances (PFAS) are synthetically made organofluoride chemical compounds. These compounds were originally introduced to the public as an additive to make nonstick cookware, but they were quickly incorporated into all sorts of other products. Commonly known as "forever chemicals", many PFAS compounds do not break down in the environment and there is increasing evidence showing that PFAS exposure can lead to adverse human health.

Microplastics

Microplastics are tiny plastic particles, which can be unintentionally formed as a result of the breakdown of larger plastics.

6PPD-Quinone Standards

Ensure and Protect Aquatic Life with our Standards for 6PPD-Quinone Testing

Organotins

Organic compounds widely used in a variety of industries for their antibacterial and fungicidal properties. Organotins are typically found in plastics, food packaging, plastic pipes, pesticides, and paints..

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SKU: PLS9-2T

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

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  • Brand Spex
  • Matrix H2O
  • 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
  • Top rated
SKU: PLS9-2M

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

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  • Brand Spex
  • Matrix H2O
  • 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
  • Top rated
SKU: PLRU3-2Y

Ruthenium, 1,000 µg/mL, for AA and ICP (125 mL)

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  • Brand Spex
  • Matrix 10% HCl
  • 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
  • Top rated
SKU: PLRU3-2X

Ruthenium, 1,000 µg/mL, for AA and ICP (500 mL)

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  • Brand Spex
  • Matrix 10% HCl
  • 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
  • Top rated
SKU: PLRU3-2M

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

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  • Brand Spex
  • Matrix 10% HCl
  • 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
  • Top rated
SKU: PLRH3-2Y

Rhodium, 1,000 µg/mL, for AA and ICP (125 mL)

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  • Brand Spex
  • Matrix 10% HCl
  • 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
  • Top rated
SKU: PLRH3-2X

Rhodium, 1,000 µg/mL, for AA and ICP (500 mL)

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  • Brand Spex
  • Matrix 10% HCl
  • 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
  • Top rated
SKU: PLRH3-2M

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

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  • Brand Spex
  • Matrix 10% HCl
  • 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
  • Top rated
SKU: PLRE9-2Y

Rhenium, 1,000 µg/mL, for AA and ICP (125 mL)

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  • Brand Spex
  • Matrix H2O
  • 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
  • Top rated
SKU: PLRE9-2X

Rhenium, 1,000 µg/mL, for AA and ICP (500 mL)

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  • Brand Spex
  • Matrix H2O
  • 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
  • Top rated
SKU: PLRE9-2M

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

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  • Brand Spex
  • Matrix H2O
  • 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
  • Top rated
SKU: PLRB2-2Y

Rubidium, 1,000 µg/mL, for AA and ICP (125 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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