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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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769 Items found

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Water Activity in Hemp PT Express (2 pack) Water Activity in Hemp PT Express (2 pack)
SKU: CMPT-021B

Water Activity in Hemp PT Express (2 pack)

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  • Brand NSI
  • Matrix Hemp
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Water Activity in Hemp (2 pack) Water Activity in Hemp (2 pack)
SKU: CMPT-021

Water Activity in Hemp (2 pack)

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  • Brand NSI
  • Matrix Hemp
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Heavy Metals in Hemp PT Express (2 pack) Heavy Metals in Hemp PT Express (2 pack)
SKU: CMPT-020B

Heavy Metals in Hemp PT Express (2 pack)

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  • Brand NSI
  • Certification Single: Gravimetric w/ICP Confirmation
  • Matrix Hemp
  • Raw Material >95% min; as available
Heavy Metals in Hemp Heavy Metals in Hemp
SKU: CMPT-020

Heavy Metals in Hemp

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  • Brand NSI
  • Certification Single: Gravimetric w/ICP Confirmation
  • Matrix Hemp
  • Raw Material >95% min; as available
Residual Solvents in Oil PT Express (2 pack) + Spike matrix Residual Solvents in Oil PT Express (2 pack) + Spike matrix
SKU: CMPT-018B

Residual Solvents in Oil PT Express (2 pack) + Spike matrix

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  • Brand NSI
  • Matrix Hemp Oil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Residual Solvents in Oil (2 pack) + Spike matrix Residual Solvents in Oil (2 pack) + Spike matrix
SKU: CMPT-018

Residual Solvents in Oil (2 pack) + Spike matrix

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  • Brand NSI
  • Matrix Hemp Oil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Clean Soil Certified Reference Material Clean Soil Certified Reference Material
SKU: CLN-SOIL

Clean Soil Certified Reference Material

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  • Brand Spex
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Raw Material >95% min; as available
CA Residual Solvents Category 2 High, 3000 µg/mL in NN-Dimethylacetamide, 1.5 mL CA Residual Solvents Category 2 High, 3000 µg/mL in NN-Dimethylacetamide, 1.5 mL
SKU: C-981

CA Residual Solvents Category 2 High, 3000 µg/mL in NN-Dimethylacetamide, 1.5 mL

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  • Brand NSI
  • Matrix NN-DMA
  • Raw Material min 95%
  • Certification Grav. &/or Volume w/Analytical Confirmation
CA Residual Solvents Category 2 Low Mix, 100 µg/mL in NN-Dimethylacetamide, 1.5 mL CA Residual Solvents Category 2 Low Mix, 100 µg/mL in NN-Dimethylacetamide, 1.5 mL
SKU: C-980

CA Residual Solvents Category 2 Low Mix, 100 µg/mL in NN-Dimethylacetamide, 1.5 mL

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  • Brand NSI
  • Matrix NN-DMA
  • Raw Material min 95%
  • Certification Grav. &/or Volume w/Analytical Confirmation
CA Residual Solvents, 100 µg/mL in NN-Dimethylacetamide, 1.5 mL CA Residual Solvents, 100 µg/mL in NN-Dimethylacetamide, 1.5 mL
SKU: C-979

CA Residual Solvents, 100 µg/mL in NN-Dimethylacetamide, 1.5 mL

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  • Brand NSI
  • Matrix NN-DMA
  • Raw Material min 95%
  • Certification Grav. &/or Volume w/Analytical Confirmation
Oregon Residual Solvent Single Neopentane, 1000 µg/mL in N,N -Dimethylacetamide, 1.5 mL Oregon Residual Solvent Single Neopentane, 1000 µg/mL in N,N -Dimethylacetamide, 1.5 mL
SKU: C-974

Oregon Residual Solvent Single Neopentane, 1000 µg/mL in N,N -Dimethylacetamide, 1.5 mL

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  • Brand NSI
  • Matrix N,N -Dimethylacetamide
  • Raw Material min 95%
  • Certification Grav. &/or Volume w/Analytical Confirmation
Spiromesifen, 1000 µg/mL in Acetonitrile, 1.5 mL Spiromesifen, 1000 µg/mL in Acetonitrile, 1.5 mL
SKU: C-973

Spiromesifen, 1000 µg/mL in Acetonitrile, 1.5 mL

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  • Brand NSI
  • Matrix Acetonitrile
  • Raw Material min 95%
  • Certification Grav. &/or Volume w/Analytical Confirmation
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