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Proficiency Testing - Analytical Technique

We offer Proficiency Testing products for a variety of testing schemes for both quantitative and qualitative test performance.
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WS - Regulated VOCs - Blind WS - Regulated VOCs - Blind
SKU: QCO-007-12B

WS - Regulated VOCs - Blind

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Regulated SOCs - Blind WS - Regulated SOCs - Blind
SKU: QCO-006B

WS - Regulated SOCs - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Toxaphene (Total) - Blind WS - Toxaphene (Total) - Blind
SKU: QCO-005-6B

WS - Toxaphene (Total) - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Chlordane (Total) - Blind WS - Chlordane (Total) - Blind
SKU: QCO-005-5B

WS - Chlordane (Total) - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Organonitrogen Pesticides - Blind WS - Organonitrogen Pesticides - Blind
SKU: QCO-005-3B

WS - Organonitrogen Pesticides - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Organochlorine Pesticides - Blind WS - Organochlorine Pesticides - Blind
SKU: QCO-005-12B

WS - Organochlorine Pesticides - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - PCBs - Blind WS - PCBs - Blind
SKU: QCO-003B

WS - PCBs - Blind

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  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Trihalomethanes - Blind WS - Trihalomethanes - Blind
SKU: QCO-002B

WS - Trihalomethanes - Blind

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  • Brand NSI
  • Matrix PT Methano
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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WS - Carbamate Pesticides - Blind WS - Carbamate Pesticides - Blind
SKU: QCO-001B

WS - Carbamate Pesticides - Blind

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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FOGs by IR - Blind FOGs by IR - Blind
SKU: QCI-199B

FOGs by IR - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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Salinity - Blind Salinity - Blind
SKU: QCI-198B

Salinity - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Nitrate-N Concentrate - Blind Nitrate-N Concentrate - Blind
SKU: QCI-195B

Nitrate-N Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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