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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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Turbidity QC Concentrate CRM Turbidity QC Concentrate CRM
SKU: QCI-014

Turbidity QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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TOC/DOC Concentrate - Blind TOC/DOC Concentrate - Blind
SKU: QCI-013B

TOC/DOC Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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TOC/DOC QC Concentrate CRM TOC/DOC QC Concentrate CRM
SKU: QCI-013

TOC/DOC QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Residual Free Chlorine Concentrate - Blind Residual Free Chlorine Concentrate - Blind
SKU: QCI-012B

Residual Free Chlorine Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Residual Free Chlorine QC Concentrate CRM Residual Free Chlorine QC Concentrate CRM
SKU: QCI-012

Residual Free Chlorine QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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TPH in Water - Blind TPH in Water - Blind
SKU: QC-116B

TPH 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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TPH in Water TPH in Water
SKU: QC-116

TPH in Water

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
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Diesel in Water - Blind Diesel in Water - Blind
SKU: QC-115B

Diesel in Water - Blind

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

Diesel in Water

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  • Brand NSI
  • Matrix Water
  • Certification Single: Gravimetric and/or Volumetric
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Gasoline in Water - Blind Gasoline in Water - Blind
SKU: QC-114B

Gasoline in Water - Blind

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

Gasoline in Water

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  • Brand NSI
  • Matrix Water
  • Certification Single: Gravimetric and/or Volumetric
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PVOC in Water - Blind PVOC in Water - Blind
SKU: QC-113B

PVOC in Water - Blind

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  • Brand NSI
  • Matrix Water
  • Certification Single: Gravimetric and/or Volumetric
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