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

769 Items found

Per Page:
Sort by:
Stable Sulfide Standard 1mg/mL Stable Sulfide Standard 1mg/mL
SKU: QCI-147L

Stable Sulfide Standard 1mg/mL

Login to view pricing
  • Brand NSI
  • Concentration 1mg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Perchlorate Concentrate - Blind Perchlorate Concentrate - Blind
SKU: QCI-146B

Perchlorate Concentrate - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Perchlorate QC Concentrate CRM Perchlorate QC Concentrate CRM
SKU: QCI-146

Perchlorate QC Concentrate CRM

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Hardness QC (4 x 250 mL) Hardness QC (4 x 250 mL)
SKU: QCI-145C

Hardness QC (4 x 250 mL)

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Hardness - Blind Hardness - Blind
SKU: QCI-145B

Hardness - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Hardness QC Hardness QC
SKU: QCI-145

Hardness QC

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Vanadium Concentrate - Blind Vanadium Concentrate - Blind
SKU: QCI-144B

Vanadium Concentrate - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Vanadium QC Concentrate CRM Vanadium QC Concentrate CRM
SKU: QCI-144

Vanadium QC Concentrate CRM

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Uranium Concentrate - Blind Uranium Concentrate - Blind
SKU: QCI-143B

Uranium Concentrate - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Uranium QC Concentrate CRM Uranium QC Concentrate CRM
SKU: QCI-143

Uranium QC Concentrate CRM

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Corrosivity - Blind Corrosivity - Blind
SKU: QCI-142B

Corrosivity - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Corrosivity QC Corrosivity QC
SKU: QCI-142

Corrosivity QC

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure