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Scheduled Proficiency Testing & PT Express™ for Drinking Water

Drinking water may contain many harmful contaminants which is why the EPA has set standards for over 90 pollutants including microorganisms, inorganic chemicals, organic chemicals, disinfectants, and disinfection by-products.

We offer a wide range of Certified Reference Materials (CRMs) for testing applications for your drinking water analysis to ensure environmental and human health. Some of our offerings include testing standards for pH, residual free chlorine, turbidity, trace metals, mercury, fluoride, and nitrite.

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SKU: PEO-005-6

Toxaphene (Total) Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-005-3

Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-005-12

Organochlorine Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-003

PCBs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-002

Trihalomethanes Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix PT Methano
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-001

Carbamate Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEI-197

Low Level Fluoride Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: PEI-195

Nitrate Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: PEI-194

Perchlorate - Whole Volume Drinking Water Inorganic Standard

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

Fluoride Drinking Water Inorganic Standard

  • CCL
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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
SKU: PEI-145

Hardness Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
SKU: PEI-144

Vanadium Drinking Water Inorganic Standard

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