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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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TCLP Metals in Soil TCLP Metals in Soil
SKU: SPEI-005

TCLP Metals in Soil

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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Hexavalent Chromium Hexavalent Chromium
SKU: SPEI-003

Hexavalent Chromium

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Metals in Soil Metals in Soil
SKU: SPEI-001

Metals in Soil

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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TPH in Soil TPH in Soil
SKU: SPE-116

TPH in Soil

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  • Brand NSI
  • Matrix Soil
  • Certification Single: Gravimetric and/or Volumetric
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Diesel in Soil Diesel in Soil
SKU: SPE-115

Diesel in Soil

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  • Brand NSI
  • Matrix Soil
  • Certification Single: Gravimetric and/or Volumetric
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Gasoline in Soil Gasoline in Soil
SKU: SPE-114

Gasoline in Soil

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  • Brand NSI
  • Matrix Soil
  • Certification Single: Gravimetric and/or Volumetric
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PVOC in Soil PVOC in Soil
SKU: SPE-113

PVOC in Soil

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  • Brand NSI
  • Matrix Soil
  • Certification Single: Gravimetric and/or Volumetric
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NPW - BTEX by PID - Blind NPW - BTEX by PID - Blind
SKU: QCO-150B

NPW - BTEX by PID - Blind

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  • Brand NSI
  • Matrix Methanol solution
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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NPW - BTEX by PID NPW - BTEX by PID
SKU: QCO-150

NPW - BTEX by PID

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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Trace Level Mercury Concentrate - Blind Trace Level Mercury Concentrate - Blind
SKU: QCO-137B

Trace Level Mercury Concentrate - Blind

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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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Trace Level Mercury QC Concentrate CRM Trace Level Mercury QC Concentrate CRM
SKU: QCO-137

Trace Level Mercury QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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NPW - Nitroaromatics/Nitramines in Water - Blind NPW - Nitroaromatics/Nitramines in Water - Blind
SKU: QCO-136B

NPW - Nitroaromatics/Nitramines in Water - Blind

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  • Brand NSI
  • Matrix Water
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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