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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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Settleable Solids QC CRM Settleable Solids QC CRM
SKU: QCI-126

Settleable Solids QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
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MBAs Concentrate - Blind MBAs Concentrate - Blind
SKU: QCI-124B

MBAs Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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MBAs QC Concentrate CRM MBAs QC Concentrate CRM
SKU: QCI-124

MBAs 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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Total Chlorine Accuracy Check Snip™ 1.00ppm Total Chlorine Accuracy Check Snip™ 1.00ppm
SKU: QCI-123

Total Chlorine Accuracy Check Snip™ 1.00ppm

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  • Brand NSI
  • Concentration 1.00 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Ultra Low Chlorine Accuracy Check Snip™ 0.100ppm Ultra Low Chlorine Accuracy Check Snip™ 0.100ppm
SKU: QCI-118

Ultra Low Chlorine Accuracy Check Snip™ 0.100ppm

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  • Brand NSI
  • Concentration 0.100 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Total Chlorine Accuracy Check Snip™ 2.50ppm Total Chlorine Accuracy Check Snip™ 2.50ppm
SKU: QCI-117

Total Chlorine Accuracy Check Snip™ 2.50ppm

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  • Brand NSI
  • Concentration 2.50 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Perchlorate Concentrate - Blind Perchlorate Concentrate - Blind
SKU: QCI-108B

Perchlorate Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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Perchlorate QC Concentrate Perchlorate QC Concentrate
SKU: QCI-108

Perchlorate QC Concentrate

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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TOX Concentrate - Blind TOX Concentrate - Blind
SKU: QCI-104B

TOX Concentrate - Blind

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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TOX QC Concentrate CRM TOX QC Concentrate CRM
SKU: QCI-104

TOX QC Concentrate CRM

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Silica Concentrate - Blind Silica Concentrate - Blind
SKU: QCI-101B

Silica Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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Silica QC Concentrate CRM Silica QC Concentrate CRM
SKU: QCI-101

Silica 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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