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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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Amenable and Total Cyanide Concentrate - Blind Amenable and Total Cyanide Concentrate - Blind
SKU: QCI-031B

Amenable and Total Cyanide Concentrate - Blind

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  • Brand NSI
  • Concentration 0.1 - 1 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Amenable and Total Cyanide QC Concentrate Amenable and Total Cyanide QC Concentrate
SKU: QCI-031

Amenable and Total Cyanide QC Concentrate

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  • Brand NSI
  • Certification Single: Grav. w/Analytical Confirmation
  • Concentration 0.1 - 1 mg/L
  • Raw Material >95% min; as available
Oil & Grease Concentrate - Blind Oil & Grease Concentrate - Blind
SKU: QCI-029B

Oil & Grease Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Oil & Grease QC Concentrate CRM Oil & Grease QC Concentrate CRM
SKU: QCI-029

Oil & Grease QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Demand Concentrate - Blind Demand Concentrate - Blind
SKU: QCI-026B

Demand Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Demand QC Concentrate Demand QC Concentrate
SKU: QCI-026

Demand QC Concentrate

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  • Brand NSI
  • Certification Single: Gravimetric w/IC Confirmation
  • Raw Material >95% min; as available
Full NELAC WS Inorganics Kit Full NELAC WS Inorganics Kit
SKU: QCI-019K

Full NELAC WS Inorganics Kit

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
EPA WS Inorganics Kit EPA WS Inorganics Kit
SKU: QCI-018K

EPA WS Inorganics Kit

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Inorganic Disinfection By-Products Concentrate - Blind Inorganic Disinfection By-Products Concentrate - Blind
SKU: QCI-017B

Inorganic Disinfection By-Products Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Inorganic Disinfection By-Products Concentrate CRM Inorganic Disinfection By-Products Concentrate CRM
SKU: QCI-017

Inorganic Disinfection By-Products Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Trace Metals Concentrate - Blind Trace Metals Concentrate - Blind
SKU: QCI-016B

Trace Metals Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Trace Metals QC Concentrate CRM Trace Metals QC Concentrate CRM
SKU: QCI-016

Trace Metals QC Concentrate CRM

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