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

Accreditations

Product Type

Regulatory Method

Instrument / Test

Analyte - Single / Multi

CAS #

Analyte / Component

Microorganism

445 Items found

Per Page:
Sort by:
Grid List
SKU: PEO-005-6

Toxaphene (Total) Drinking Water Organic Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEO-005-3

Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEO-005-12

Organochlorine Pesticides Drinking Water Organic Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEO-003

PCBs Drinking Water Organic Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEO-002

Trihalomethanes Drinking Water Organic Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Matrix PT Methano
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEO-001

Carbamate Pesticides Drinking Water Organic Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Matrix Methanol
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEI-199

FOGs by IR Wastewater PT Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
Quick View
SKU: PEI-198

Salinity Wastewater PT Standard (2 pack)

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
Quick View
SKU: PEI-197

Low Level Fluoride Drinking Water Inorganic Standard

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Quick View
SKU: PEI-195

Nitrate Drinking Water Inorganic Standard

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Quick View
SKU: PEI-194

Perchlorate - Whole Volume Drinking Water Inorganic Standard

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Quick View
SKU: PEI-193

Fluoride Drinking Water Inorganic Standard

  • CCL
Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
Quick View
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure