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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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Trace Level Mercury Concentrate - Blind Trace Level Mercury Concentrate - Blind
SKU: QCO-137B

Trace Level Mercury Concentrate - Blind

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  • Brand NSI
  • Matrix Nitric acid
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Trace Level Mercury QC Concentrate CRM Trace Level Mercury QC Concentrate CRM
SKU: QCO-137

Trace Level Mercury QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
NPW - Nitroaromatics/Nitramines in Water - Blind NPW - Nitroaromatics/Nitramines in Water - Blind
SKU: QCO-136B

NPW - Nitroaromatics/Nitramines in Water - Blind

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  • Brand NSI
  • Matrix Water
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Nitroaromatics/Nitramines in Water NPW - Nitroaromatics/Nitramines in Water
SKU: QCO-136

NPW - Nitroaromatics/Nitramines in Water

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  • Brand NSI
  • Matrix Acetonitrile
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Low Level PAHs - Blind NPW - Low Level PAHs - Blind
SKU: QCO-135B

NPW - Low Level PAHs - Blind

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  • Brand NSI
  • Matrix Acetonitile
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Low Level PAHs NPW - Low Level PAHs
SKU: QCO-135

NPW - Low Level PAHs

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  • Brand NSI
  • Matrix Acetonitrile
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Chlorinated Acid Herbicides - Blind WS - Chlorinated Acid Herbicides - Blind
SKU: QCO-123B

WS - Chlorinated Acid Herbicides - Blind

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  • Brand NSI
  • Matrix MTBE
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Chlorinated Acid Herbicides WS - Chlorinated Acid Herbicides
SKU: QCO-123

WS - Chlorinated Acid Herbicides

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Organochlorine Pesticides - Blind NPW - Organochlorine Pesticides - Blind
SKU: QCO-122B

NPW - Organochlorine Pesticides - Blind

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  • Brand NSI
  • Matrix Ethyl acetate
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Organochlorine Pesticides NPW - Organochlorine Pesticides
SKU: QCO-122

NPW - Organochlorine Pesticides

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Base/Neutrals - Blind NPW - Base/Neutrals - Blind
SKU: QCO-121B

NPW - Base/Neutrals - Blind

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  • Brand NSI
  • Matrix Acetone/Methanol solution
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Base/Neutrals NPW - Base/Neutrals
SKU: QCO-121

NPW - Base/Neutrals

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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