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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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Regulated SOCs Drinking Water Organic Standard (2 pack) Regulated SOCs Drinking Water Organic Standard (2 pack)
SKU: PEO-006

Regulated SOCs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Toxaphene (Total) Drinking Water Organic Standard (2 pack) Toxaphene (Total) Drinking Water Organic Standard (2 pack)
SKU: PEO-005-6

Toxaphene (Total) Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Chlordane in Drinking Water PT, 2 x 1.5mL Chlordane in Drinking Water PT, 2 x 1.5mL
SKU: PEO-005-5

Chlordane in Drinking Water PT, 2 x 1.5mL

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Matrix Acetone
  • Raw Material >95% min; as available
Organonitrogen Pesticides Drinking Water Organic Standard (2 pack) Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)
SKU: PEO-005-3

Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Organochlorine Pesticides Drinking Water Organic Standard (2 pack) Organochlorine Pesticides Drinking Water Organic Standard (2 pack)
SKU: PEO-005-12

Organochlorine Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
PCBs Drinking Water Organic Standard (2 pack) PCBs Drinking Water Organic Standard (2 pack)
SKU: PEO-003

PCBs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Trihalomethanes Drinking Water Organic Standard (2 pack) Trihalomethanes Drinking Water Organic Standard (2 pack)
SKU: PEO-002

Trihalomethanes Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix PT Methano
  • Certification Single: Grav. w/Analytical Confirmation
Carbamate Pesticides Drinking Water Organic Standard (2 pack) Carbamate Pesticides Drinking Water Organic Standard (2 pack)
SKU: PEO-001

Carbamate Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol
  • Certification Single: Grav. w/Analytical Confirmation
FOGs by IR Wastewater PT Standard (2 pack) FOGs by IR Wastewater PT Standard (2 pack)
SKU: PEI-199

FOGs by IR Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Salinity Wastewater PT Standard (2 pack) Salinity Wastewater PT Standard (2 pack)
SKU: PEI-198

Salinity Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Low Level Fluoride Drinking Water Inorganic Standard Low Level Fluoride Drinking Water Inorganic Standard
SKU: PEI-197

Low Level Fluoride Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Nitrate Drinking Water Inorganic Standard Nitrate Drinking Water Inorganic Standard
SKU: PEI-195

Nitrate Drinking Water Inorganic Standard

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