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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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721 Items found

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Toxaphene (Total) Drinking Water Organic Standard (2 pack) Toxaphene (Total) Drinking Water Organic Standard (2 pack)
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
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Chlordane in Drinking Water PT, 2 x 1.5mL Chlordane in Drinking Water PT, 2 x 1.5mL
SKU: PEO-005-5

Chlordane in Drinking Water PT, 2 x 1.5mL

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Matrix Acetone
  • Raw Material >95% min; as available
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Organonitrogen Pesticides Drinking Water Organic Standard (2 pack) Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)
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
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Organochlorine Pesticides Drinking Water Organic Standard (2 pack) Organochlorine Pesticides Drinking Water Organic Standard (2 pack)
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
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PCBs Drinking Water Organic Standard (2 pack) PCBs Drinking Water Organic Standard (2 pack)
SKU: PEO-003

PCBs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
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Trihalomethanes Drinking Water Organic Standard (2 pack) Trihalomethanes Drinking Water Organic Standard (2 pack)
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
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Carbamate Pesticides Drinking Water Organic Standard (2 pack) Carbamate Pesticides Drinking Water Organic Standard (2 pack)
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
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FOGs by IR Wastewater PT Standard (2 pack) FOGs by IR Wastewater PT Standard (2 pack)
SKU: PEI-199

FOGs by IR Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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Salinity Wastewater PT Standard (2 pack) Salinity Wastewater PT Standard (2 pack)
SKU: PEI-198

Salinity Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Low Level Fluoride Drinking Water Inorganic Standard Low Level Fluoride Drinking Water Inorganic Standard
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
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Nitrate Drinking Water Inorganic Standard Nitrate Drinking Water Inorganic Standard
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
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Perchlorate - Whole Volume Drinking Water Inorganic Standard Perchlorate - Whole Volume Drinking Water Inorganic Standard
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
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