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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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TOC/DOC Drinking Water Inorganic Standard TOC/DOC Drinking Water Inorganic Standard
SKU: PEI-013

TOC/DOC Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Residual Free Chlorine Drinking Water Inorganic Standard Residual Free Chlorine Drinking Water Inorganic Standard
SKU: PEI-012

Residual Free Chlorine Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
TPH in Water, Single Ampule TPH in Water, Single Ampule
SKU: PE-116

TPH in Water, Single Ampule

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
Diesel in Water, Single Ampule Diesel in Water, Single Ampule
SKU: PE-115

Diesel in Water, Single Ampule

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
Gasoline in Water, Single Ampule Gasoline in Water, Single Ampule
SKU: PE-114

Gasoline in Water, Single Ampule

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
MIC-QC6B - Drinking Water Quantitative Coliforms - Blind MIC-QC6B - Drinking Water Quantitative Coliforms - Blind
SKU: MIC-QC6B

MIC-QC6B - Drinking Water Quantitative Coliforms - Blind

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
Drinking Water Quantitative Coliforms Drinking Water Quantitative Coliforms
SKU: MIC-QC6

Drinking Water Quantitative Coliforms

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
MIC-QC5B - Quantitative Enterococcus/Fecal Strep - Blind MIC-QC5B - Quantitative Enterococcus/Fecal Strep - Blind
SKU: MIC-QC5B

MIC-QC5B - Quantitative Enterococcus/Fecal Strep - Blind

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
Quantitative Enterococcus/Fecal Strep Quantitative Enterococcus/Fecal Strep
SKU: MIC-QC5

Quantitative Enterococcus/Fecal Strep

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  • Brand NSI
  • Certification Cultural based enumeration
  • Raw Material <2 passages from primary culture
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