Skip to Main Content

Select country

Select your country

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.

Download Our Proficiency Testing Brochure

DOWNLOAD BROCHURE

Search by Category

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.

Categories and filters

Filter / Sorting

Categories

Brand

Classification

Accreditations

Product Type

Regulatory Method

Instrument / Test

Analyte - Single / Multi

CAS #

Strain

Analyte / Component

Microorganism

718 Items found

Per Page:
Sort by:
NPW - Nitroaromatics/Nitramines in Water NPW - Nitroaromatics/Nitramines in Water
SKU: QCO-136

NPW - Nitroaromatics/Nitramines in Water

Login to view pricing
  • Brand NSI
  • Matrix Acetonitrile
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Low Level PAHs - Blind NPW - Low Level PAHs - Blind
SKU: QCO-135B

NPW - Low Level PAHs - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetonitile
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Low Level PAHs NPW - Low Level PAHs
SKU: QCO-135

NPW - Low Level PAHs

Login to view pricing
  • Brand NSI
  • Matrix Acetonitrile
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Chlorinated Acid Herbicides - Blind WS - Chlorinated Acid Herbicides - Blind
SKU: QCO-123B

WS - Chlorinated Acid Herbicides - Blind

Login to view pricing
  • Brand NSI
  • Matrix MTBE
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Chlorinated Acid Herbicides WS - Chlorinated Acid Herbicides
SKU: QCO-123

WS - Chlorinated Acid Herbicides

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Organochlorine Pesticides - Blind NPW - Organochlorine Pesticides - Blind
SKU: QCO-122B

NPW - Organochlorine Pesticides - Blind

Login to view pricing
  • Brand NSI
  • Matrix Ethyl acetate
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Organochlorine Pesticides NPW - Organochlorine Pesticides
SKU: QCO-122

NPW - Organochlorine Pesticides

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Base/Neutrals - Blind NPW - Base/Neutrals - Blind
SKU: QCO-121B

NPW - Base/Neutrals - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone/Methanol solution
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Base/Neutrals NPW - Base/Neutrals
SKU: QCO-121

NPW - Base/Neutrals

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Volatiles - Blind NPW - Volatiles - Blind
SKU: QCO-120B

NPW - Volatiles - Blind

Login to view pricing
  • Brand NSI
  • Matrix Methanol solution
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
NPW - Volatiles NPW - Volatiles
SKU: QCO-120

NPW - Volatiles

Login to view pricing
  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Matrix Methanol
  • Raw Material >95% min; as available
NPW - Supplemental Volatiles - Blind NPW - Supplemental Volatiles - Blind
SKU: QCO-119B

NPW - Supplemental Volatiles - Blind

Login to view pricing
  • Brand NSI
  • Matrix Methanol solution
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure