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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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Volatile Solids - Blind Volatile Solids - Blind
SKU: QCI-127B

Volatile Solids - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Volatile Solids QC CRM Volatile Solids QC CRM
SKU: QCI-127

Volatile Solids QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Settleable Solids - Blind Settleable Solids - Blind
SKU: QCI-126B

Settleable Solids - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Settleable Solids QC CRM Settleable Solids QC CRM
SKU: QCI-126

Settleable Solids QC CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
MBAs Concentrate - Blind MBAs Concentrate - Blind
SKU: QCI-124B

MBAs Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
MBAs QC Concentrate CRM MBAs QC Concentrate CRM
SKU: QCI-124

MBAs QC Concentrate CRM

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Total Chlorine Accuracy Check Snip™ 1.00ppm Total Chlorine Accuracy Check Snip™ 1.00ppm
SKU: QCI-123

Total Chlorine Accuracy Check Snip™ 1.00ppm

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  • Brand NSI
  • Concentration 1.00 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Ultra Low Chlorine Accuracy Check Snip™ 0.100ppm Ultra Low Chlorine Accuracy Check Snip™ 0.100ppm
SKU: QCI-118

Ultra Low Chlorine Accuracy Check Snip™ 0.100ppm

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  • Brand NSI
  • Concentration 0.100 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Total Chlorine Accuracy Check Snip™ 2.50ppm Total Chlorine Accuracy Check Snip™ 2.50ppm
SKU: QCI-117

Total Chlorine Accuracy Check Snip™ 2.50ppm

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  • Brand NSI
  • Concentration 2.50 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Perchlorate Concentrate - Blind Perchlorate Concentrate - Blind
SKU: QCI-108B

Perchlorate Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Perchlorate QC Concentrate Perchlorate QC Concentrate
SKU: QCI-108

Perchlorate QC Concentrate

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
TOX Concentrate - Blind TOX Concentrate - Blind
SKU: QCI-104B

TOX Concentrate - Blind

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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