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Proficiency Testing

We offer Proficiency Testing products for a variety of testing schemes for both quantitative and qualitative test performance.
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Microorganism

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SKU: PEI-041

Inorganics Drinking Water Inorganic Standard

  • CCL
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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-037K

EPA Inorganics NPW Set

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  • Brand NSI
  • Raw Material >95% min
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-035K

Full NELAC Inorganics Set

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  • Brand NSI
  • Raw Material >95% min
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-035

pH (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-034

Trace Metals (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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SKU: PEI-033

Total Residual Chlorine (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-032

Total Phenolics (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-031

Amenable and Total Cyanide (2 pack)

  • CCL
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  • Brand NSI
  • Concentration 0.1 - 1 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-029

Oil and Grease (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-026

Demand (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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SKU: PEI-020K

EPA WS Inorganics Kit

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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SKU: PEI-018K

Full NELAC WS Inorganics Kit

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