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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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PCB in Transformer Oil PCB in Transformer Oil
SKU: SPEO-072

PCB in Transformer Oil

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  • Brand NSI
  • Matrix Transformer Oil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TOX in Soil TOX in Soil
SKU: SPEO-038

TOX in Soil

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Organophosphorus Pesticides Organophosphorus Pesticides
SKU: SPEO-021

Organophosphorus Pesticides

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Nutrients in Soil Nutrients in Soil
SKU: SPEO-019

Nutrients in Soil

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Full NELAC Set - SPEO-015K Full NELAC Set - SPEO-015K
SKU: SPEO-015K

Full NELAC Set - SPEO-015K

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCLP Pesticides TCLP Pesticides
SKU: SPEO-015-PEST

TCLP Pesticides

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCLP Herbicides TCLP Herbicides
SKU: SPEO-015-HERB

TCLP Herbicides

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCLP Base/Neutrals TCLP Base/Neutrals
SKU: SPEO-015-BN

TCLP Base/Neutrals

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Chlordane in Soil Chlordane in Soil
SKU: SPEO-009

Chlordane in Soil

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
VOCs in Soil - Low Level VOCs in Soil - Low Level
SKU: SPEO-008L

VOCs in Soil - Low Level

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
VOCs in Soil - Mid Level VOCs in Soil - Mid Level
SKU: SPEO-008H

VOCs in Soil - Mid Level

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  • Brand NSI
  • Matrix Soil
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Semivolatiles in Soil Semivolatiles in Soil
SKU: SPEO-007

Semivolatiles in Soil

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