Skip to Main Content

Select country

Select your country

Proficiency Testing

We offer Proficiency Testing products for a variety of testing schemes for both quantitative and qualitative test performance.
Grid List

Categories and filters

Filter / Sorting

Categories

Brand

Classification

Accreditations

Product Type

Regulatory Method

Instrument / Test

Analyte - Single / Multi

CAS #

Strain

Analyte / Component

Microorganism

721 Items found

Per Page:
Sort by:
Grid List
Dissolved Oxygen QC CRM Dissolved Oxygen QC CRM
SKU: QCI-192

Dissolved Oxygen QC CRM

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
Ignitability - Blind Ignitability - Blind
SKU: QCI-191B

Ignitability - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
Ignitability QC CRM Ignitability QC CRM
SKU: QCI-191

Ignitability QC CRM

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
Uranium QC Concentrate CRM Uranium QC Concentrate CRM
SKU: QCI-190

Uranium QC Concentrate CRM

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Quick View
Total Residual Chlorine Concentrate CRM 2.00 mg/L Total Residual Chlorine Concentrate CRM 2.00 mg/L
SKU: QCI-189

Total Residual Chlorine Concentrate CRM 2.00 mg/L

Login to view pricing
  • Brand NSI
  • Concentration 2.00 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
Total Residual Chlorine Concentrate CRM 1.50 mg/L Total Residual Chlorine Concentrate CRM 1.50 mg/L
SKU: QCI-188

Total Residual Chlorine Concentrate CRM 1.50 mg/L

Login to view pricing
  • Brand NSI
  • Concentration 1.50 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
Total Residual Chlorine Concentrate CRM 1.00 mg/L Total Residual Chlorine Concentrate CRM 1.00 mg/L
SKU: QCI-187

Total Residual Chlorine Concentrate CRM 1.00 mg/L

Login to view pricing
  • Brand NSI
  • Concentration 1.00 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
Settleable Solids Reference Material Settleable Solids Reference Material
SKU: QCI-186-5

Settleable Solids Reference Material

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
Settleable Solids Reference Material Settleable Solids Reference Material
SKU: QCI-186-20

Settleable Solids Reference Material

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
Settleable Solids Reference Material Settleable Solids Reference Material
SKU: QCI-186-10

Settleable Solids Reference Material

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
Total Residual Chlorine Concentrate CRM 0.500 mg/L Total Residual Chlorine Concentrate CRM 0.500 mg/L
SKU: QCI-184

Total Residual Chlorine Concentrate CRM 0.500 mg/L

Login to view pricing
  • Brand NSI
  • Concentration 0.500 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
Total Residual Chlorine Concentrate CRM 0.100 mg/L Total Residual Chlorine Concentrate CRM 0.100 mg/L
SKU: QCI-183

Total Residual Chlorine Concentrate CRM 0.100 mg/L

Login to view pricing
  • Brand NSI
  • Concentration 0.100 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure