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Certified Reference Materials for Drinking Water Analysis

Drinking water is susceptible to numerous harmful contaminants, prompting the EPA to establish rigorous regulations for more than 90 pollutants, including microorganisms, inorganic chemicals, organic chemicals, disinfectants, and disinfection by-products.

We provide an extensive range of certified reference materials (CRMs) tailored for comprehensive drinking water analysis. Offerings include drinking water pH standards and testing standards for residual free chlorine, turbidity, trace metals, mercury, fluoride, and nitrite.

Our drinking water standards are essential for maintaining water quality, safeguarding public health, and supporting accurate, reliable laboratory analysis.

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2,788 Items found

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WS - Carbamate Pesticides WS - Carbamate Pesticides
SKU: QCO-001

WS - Carbamate Pesticides

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Salinity QC CRM Salinity QC CRM
SKU: QCI-198

Salinity QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Low Level Fluoride QC CRM Low Level Fluoride QC CRM
SKU: QCI-197

Low Level Fluoride QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Nitrate-N QC Concentrate Nitrate-N QC Concentrate
SKU: QCI-195

Nitrate-N QC Concentrate

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Perchlorate Whole Volume QC Perchlorate Whole Volume QC
SKU: QCI-194

Perchlorate Whole Volume QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Fluoride - Blind Fluoride - Blind
SKU: QCI-193B

Fluoride - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Fluoride QC Fluoride QC
SKU: QCI-193

Fluoride QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Drinking Water Fluoride QC Drinking Water Fluoride QC
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
Turbidity QC Check Standards 5 NTU (500 mL) Turbidity QC Check Standards 5 NTU (500 mL)
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
Turbidity QC Check Standards 10 NTU (500 mL) Turbidity QC Check Standards 10 NTU (500 mL)
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
Turbidity QC Check Standards 25 NTU (500 mL) Turbidity QC Check Standards 25 NTU (500 mL)
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
Turbidity QC Check Standards 50 NTU (500 mL) Turbidity QC Check Standards 50 NTU (500 mL)
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
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