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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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4,845 Items found

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SKU: SQCI-003

Hexavalent Chromium

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: SPEI-003

Hexavalent Chromium

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
  • Top rated
SKU: SPEC-CR6

CHROMIUM 6 in H2O 1000ppm (125 mL)

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  • Brand Spex
  • Matrix H2O
  • Concentration 1000ppm
  • 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: SPEC-CR3

CHROMIUM 3 in 2-5% HNO3 1000ppm (125ml)

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  • Brand Spex
  • Matrix 2-5% HNO3
  • Concentration 1000ppm
  • 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: SPEC-AS3

ARSENIC 3 in 2-5% HCL 1000ppm (125 mL)

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  • Brand Spex
  • Matrix 2-5% HCL
  • Concentration 1000ppm
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
  • Top rated
  • KIT
SKU: QC-SETB

SET OF TWO;QC-21 & QC-7 HNO3

  • CCL
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  • Brand Spex
  • Matrix Multiple
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
SKU: QC-SETA

SET OF TWO:QC-21,QC-7A (HNO3)

  • CCL
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  • Brand Spex
  • Matrix Multiple
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
SKU: QCI-128B

Hexavalent Chromium Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: QCI-128

Hexavalent Chromium QC Concentrate

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: QCI-095B

Hexavalent Chromium Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-095

Hexavalent Chromium QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
  • Top rated
SKU: QC-7A-500

QUALITY CONTROL STANDARD 7A,500ML HNO3 (500 mL)

  • CCL
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  • Brand Spex
  • Matrix 5% HNO3/tr. HF
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
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