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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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FOGs by IR QC CRM FOGs by IR QC CRM
SKU: QCI-199

FOGs by IR QC CRM

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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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Salinity QC CRM Salinity QC CRM
SKU: QCI-198

Salinity QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Low Level Fluoride in Drinking Water PT Express *ECCN* 2 x 250mL Low Level Fluoride in Drinking Water PT Express *ECCN* 2 x 250mL
SKU: QCI-197B

Low Level Fluoride in Drinking Water PT Express *ECCN* 2 x 250mL

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  • Brand NSI
  • Matrix Water
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Low Level Fluoride QC CRM Low Level Fluoride QC CRM
SKU: QCI-197

Low Level Fluoride QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC 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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Nitrate-N QC Concentrate Nitrate-N QC Concentrate
SKU: QCI-195

Nitrate-N QC Concentrate

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Perchlorate Whole Volume QC Perchlorate Whole Volume QC
SKU: QCI-194

Perchlorate Whole Volume QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Fluoride - Blind Fluoride - Blind
SKU: QCI-193B

Fluoride - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Fluoride QC Fluoride QC
SKU: QCI-193

Fluoride QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Dissolved Oxygen QC CRM (4 x 125 mL) Dissolved Oxygen QC CRM (4 x 125 mL)
SKU: QCI-192C

Dissolved Oxygen QC CRM (4 x 125 mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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Dissolved Oxygen - Blind Dissolved Oxygen - Blind
SKU: QCI-192B

Dissolved Oxygen - Blind

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