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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: QCI-182

Total Residual Chlorine Concentrate CRM 0.050 mg/L

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  • Brand NSI
  • Concentration 0.050 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-171

Multi-Analyte Solids CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-170

Drinking Water Fluoride QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: QCI-156

Turbidity QC Check Standards 5 NTU (500 mL)

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  • Brand NSI
  • Concentration 5 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-155

Turbidity QC Check Standards 10 NTU (500 mL)

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  • Brand NSI
  • Concentration 10 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-154

Turbidity QC Check Standards 25 NTU (500 mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-153

Turbidity QC Check Standards 50 NTU (500 mL)

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  • Brand NSI
  • Concentration 50 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-152

Turbidity QC Check Standards 100 NTU (500 mL)

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  • Brand NSI
  • Concentration 100 NTU
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-147

Stable Sulfide Standard 10mg/mL

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  • Brand NSI
  • Concentration 10mg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-147L

Stable Sulfide Standard 1mg/mL

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  • Brand NSI
  • Concentration 1mg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QCI-146B

Perchlorate Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: QCI-146

Perchlorate QC Concentrate CRM

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