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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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SKU: QCI-012

Residual Free Chlorine QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QC-116

TPH in Water

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
SKU: QC-115

Diesel in Water

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  • Brand NSI
  • Matrix Water
  • Certification Single: Gravimetric and/or Volumetric
SKU: QC-114

Gasoline in Water

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  • Brand NSI
  • Matrix Water
  • Certification Single: Gravimetric and/or Volumetric
SKU: QC-113

PVOC in Water

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
SKU: QC-003SNIP

Oil and Grease Method 1664 - Recovery Standard (0.4%) Snip™

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: QC-003LSNIP

Oil and Grease Method 1664 - Recovery Standard (0.2%) Snip™

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-150

BTEX by PID Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-137

Trace Level Mercury (2 pack)

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  • Brand NSI
  • Matrix Nitric acid
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
SKU: PEO-136

Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-135

Low Level PAHs Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Acetonitile
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEO-123

Chlorinated Acid Herbicides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix MTBE
  • Certification Single: Grav. w/Analytical Confirmation
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