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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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PVOC in Water PVOC in Water
SKU: QC-113

PVOC in Water

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
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Oil and Grease Method 1664 - Recovery Standard (0.4%) Snip™ Oil and Grease Method 1664 - Recovery Standard (0.4%) Snip™
SKU: QC-003SNIP

Oil and Grease Method 1664 - Recovery Standard (0.4%) Snip™

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Oil and Grease Method 1664 - Recovery Standard (0.2%) Snip™ Oil and Grease Method 1664 - Recovery Standard (0.2%) Snip™
SKU: QC-003LSNIP

Oil and Grease Method 1664 - Recovery Standard (0.2%) Snip™

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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BTEX by PID Wastewater PT Standard (2 pack) BTEX by PID Wastewater PT Standard (2 pack)
SKU: PEO-150

BTEX by PID Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
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Trace Level Mercury (2 pack) Trace Level Mercury (2 pack)
SKU: PEO-137

Trace Level Mercury (2 pack)

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  • Brand NSI
  • Matrix Nitric acid
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack) Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack)
SKU: PEO-136

Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
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Low Level PAHs Wastewater PT Standard (2 pack) Low Level PAHs Wastewater PT Standard (2 pack)
SKU: PEO-135

Low Level PAHs Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Acetonitile
  • Certification Single: Grav. w/Analytical Confirmation
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Chlorinated Acid Herbicides Drinking Water Organic Standard (2 pack) Chlorinated Acid Herbicides Drinking Water Organic Standard (2 pack)
SKU: PEO-123

Chlorinated Acid Herbicides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix MTBE
  • Certification Single: Grav. w/Analytical Confirmation
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Organochlorine Pesticides Wastewater PT Standard (2 pack) Organochlorine Pesticides Wastewater PT Standard (2 pack)
SKU: PEO-122

Organochlorine Pesticides Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Ethyl acetate
  • Certification Single: Grav. w/Analytical Confirmation
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Base/Neutrals Wastewater PT Standard (2 pack) Base/Neutrals Wastewater PT Standard (2 pack)
SKU: PEO-121

Base/Neutrals Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone/Methanol soution
  • Certification Single: Grav. w/Analytical Confirmation
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Volatiles Wastewater PT Standard (2 pack) Volatiles Wastewater PT Standard (2 pack)
SKU: PEO-120

Volatiles Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
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Supplemental Volatiles Wastewater PT Standard (2 pack) Supplemental Volatiles Wastewater PT Standard (2 pack)
SKU: PEO-119

Supplemental Volatiles Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
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