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

We offer organic, inorganic, microbiology, and proficiency testing (PT) reference materials for environmental testing. Choosing environmental reference materials from ZeptoMetrix means accurate and robust chemical and microbiological certified reference materials (CRMs). Our standards are certified for various environmental methods (e.g., EPA, Standard Methods, AOAC, ASTM). Every COA includes certified values for a variety of analytical techniques. We provide custom reference material manufacturing under ISO 17034. Our CRMs increase your laboratory’s efficiency and provide confidence in the accuracy of your results.

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Wastewater Standards

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

Drinking Water Standards

A wide range of CRMs for drinking water analysis to help ensure environmental and human health.

Soil/UST Standards

Meet foundational regulations designed to protect the environment and public health from hazards associated with underground storage tanks.

SNIP™ Standards

NSI SNIP™ standards are the easiest-to-use control standards for wastewater testing — pre-measured, ready-to-use single-use tubes that require no pipetting.

Pesticides Standards

Support analysis of hundreds of commercial pesticides with ready-to-use mixes and single-compound CRMs.

PFAS

CRMs to analyze per- and polyfluoroalkyl substances (PFAS), the synthetically made organofluorine compounds commonly known as “forever chemicals.”

Microplastics

Chiron MicroPRefs® — the first commercial microplastic reference materials — in an easy-to-use formulation.

6PPD-Quinone Standards

Help protect aquatic life with standards for 6PPD-quinone testing.

Organotins

Broad and unique inventory of organotin reference materials used across industries for antibacterial and fungicidal applications.

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Midpoint Check w/CLP Surrogates (5X1.5mL) Midpoint Check w/CLP Surrogates (5X1.5mL)
SKU: WL-514FP

Midpoint Check w/CLP Surrogates (5X1.5mL)

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  • Brand NSI
  • Concentration 50 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Midpoint Check w/Surrogates - SW-846  (5X1.5mL) Midpoint Check w/Surrogates - SW-846  (5X1.5mL)
SKU: WL-513FP

Midpoint Check w/Surrogates - SW-846 (5X1.5mL)

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  • Brand NSI
  • Concentration 50 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Ready Stock 200 - SW-846 Surr (5mL) Ready Stock 200 - SW-846 Surr (5mL)
SKU: WL-507

Ready Stock 200 - SW-846 Surr (5mL)

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  • Brand NSI
  • Matrix Methylene chloride
  • Concentration 200 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Pesticide Spike II Pesticide Spike II
SKU: WL-445

Pesticide Spike II

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike w/o Benzidines (50mL) TCL BNA LCS Spike w/o Benzidines (50mL)
SKU: WL-408-50X

TCL BNA LCS Spike w/o Benzidines (50mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike (50mL) TCL BNA LCS Spike (50mL)
SKU: WL-408-50

TCL BNA LCS Spike (50mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike w/o Benzidines (25mL) TCL BNA LCS Spike w/o Benzidines (25mL)
SKU: WL-408-25X

TCL BNA LCS Spike w/o Benzidines (25mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike (25mL) TCL BNA LCS Spike (25mL)
SKU: WL-408-25

TCL BNA LCS Spike (25mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike w/o Benzidines (10mL) TCL BNA LCS Spike w/o Benzidines (10mL)
SKU: WL-408-10X

TCL BNA LCS Spike w/o Benzidines (10mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike (10mL) TCL BNA LCS Spike (10mL)
SKU: WL-408-10

TCL BNA LCS Spike (10mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
625 LCS Spike (2 x 25mL) 625 LCS Spike (2 x 25mL)
SKU: WL-397X

625 LCS Spike (2 x 25mL)

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Concentration 100ug/mL
  • Matrix Methanol/Methylene
  • Raw Material >95% min; as available
625 LCS Spike (2 x 25mL) 625 LCS Spike (2 x 25mL)
SKU: WL-397

625 LCS Spike (2 x 25mL)

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Concentration 100ug/mL
  • Matrix Methanol/Methylene
  • Raw Material >95% min; as available
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