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

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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
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
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
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
SKU: PEO-120

Volatiles Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
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
SKU: PEO-104

NPW - Alcohols in Water

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-103

Low Level Halocarbons Wastewater PT Standard (2 pack)

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