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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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TPH in Soil TPH in Soil
SKU: SQCI-140

TPH in Soil

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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 in Soil – Blind Oil and Grease in Soil – Blind
SKU: SQCI-037B

Oil and Grease in Soil – Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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Oil and Grease in Soil Oil and Grease in Soil
SKU: SQCI-037

Oil and Grease in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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Sulfide in Soil – Blind Sulfide in Soil – Blind
SKU: SQCI-018B

Sulfide in Soil – Blind

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

Sulfide in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Cyanide in Soil – Blind Cyanide in Soil – Blind
SKU: SQCI-017B

Cyanide in Soil – Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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Cyanide in Soil Cyanide in Soil
SKU: SQCI-017

Cyanide in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
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Low Level PAHs in Soil – Blind Low Level PAHs in Soil – Blind
SKU: SQCI-016B

Low Level PAHs in Soil – Blind

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
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Low Level PAHs in Soil Low Level PAHs in Soil
SKU: SQCI-016

Low Level PAHs in Soil

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
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Anions in Soil – Blind Anions in Soil – Blind
SKU: SQCI-015B

Anions in Soil – Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Anions in Soil Anions in Soil
SKU: SQCI-015

Anions in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Flash Point – Blind Flash Point – Blind
SKU: SQCI-014B

Flash Point – Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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