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Scheduled Proficiency Testing & PT Express™ 

As a leader among proficiency testing providers, we are proud to offer NSI Lab Solutions ISO 17043-accredited proficiency testing to environmental, food science, and cannabis/hemp testing laboratories. Our accredited PTs are also available through our on-demand PT Express version, allowing you to receive your final graded report within 48 hours after submitting results — no scheduled test selection required.

Past report copies and data entry are available 24/7 using our secure online PT Datalink. Scheduled proficiency testing is also available throughout the year. You may also be interested in our analytical reference materials.

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Environmental

Our studies include all analytes required by TNI fields of testing. All quantitative samples are supplied in duplicate.

Food & Agriculture

NSI Lab Solutions Food Microbiology Proficiency Testing (PT) studies are designed for your convenience and success.

Cannabis & Hemp

Cannabis & Hemp proficiency testing studies are designed for your convenience and success.

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Minerals - Blind Minerals - Blind
SKU: QCI-136B

Minerals - Blind

  • CCL
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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Minerals QC CRM Minerals QC CRM
SKU: QCI-136

Minerals QC CRM

  • CCL
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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Wastewater Bromide Concentrate - Blind Wastewater Bromide Concentrate - Blind
SKU: QCI-134B

Wastewater Bromide Concentrate - Blind

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  • Brand NSI
  • Concentration 1.0 - 10 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Wastewater Bromide QC Concentrate CRM Wastewater Bromide QC Concentrate CRM
SKU: QCI-134

Wastewater Bromide QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Drinking Water Color - Blind Drinking Water Color - Blind
SKU: QCI-131B

Drinking Water Color - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Drinking Water Color QC Drinking Water Color QC
SKU: QCI-131

Drinking Water Color QC

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Wastewater Color - Blind Wastewater Color - Blind
SKU: QCI-130B

Wastewater Color - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Wastewater Color QC CRM Wastewater Color QC CRM
SKU: QCI-130

Wastewater Color QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SGT - HEM (TPH) Concentrate - Blind SGT - HEM (TPH) Concentrate - Blind
SKU: QCI-129B

SGT - HEM (TPH) Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SGT - HEM (TPH) QC Concentrate CRM SGT - HEM (TPH) QC Concentrate CRM
SKU: QCI-129

SGT - HEM (TPH) QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Hexavalent Chromium Concentrate - Blind Hexavalent Chromium Concentrate - Blind
SKU: QCI-128B

Hexavalent Chromium Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Hexavalent Chromium QC Concentrate Hexavalent Chromium QC Concentrate
SKU: QCI-128

Hexavalent Chromium QC Concentrate

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