Skip to Main Content

Select country

Select your country

Scheduled Proficiency Testing & PT Express™ for Environmental Testing

  • Certified for environmental methods — plate counts, MPN
  • COA includes expected values for multiple methods
  • Robust — lyophilized technique ensures strong recovery, even for 44.5 ºC coliform methods
  • Unique — multi-organism CRM covers six methods in a single pellet

Search by Category

DMRQA

The Discharge Monitoring Report-Quality Assurance Study Program (DMRQA) plays a critical role in monitoring compliance with environmental regulations, ensuring the accuracy of data, identifying trends and patterns, and promoting transparency and accountability in environmental management.

Drinking Water Standards

NSI offers a wide range of Certified Reference Materials (CRMs) for drinking water analysis to ensure environmental and human health. Offerings include testing standards for pH, residual free chlorine, turbidity, trace metals, mercury, fluoride, and nitrite.

Legionella

Legionella certified reference materials are crucial for ensuring the accuracy and reliability of testing methods used to detect the presence of Legionella bacteria in water systems.

Soil/UST Standards

Soil and Underground Storage Tank (UST) standards are fundamental regulations established to preserve the environment and human health from hazards associated with underground storage tanks.

Wastewater Standards

Wastewater analysis is a powerful public and environmental health tool. We are laser-focused on manufacturing and delivering unique ISO-accredited Certified Reference Materials (CRMs) that are not only stable but also easy to use and implement.

Categories and filters

Filter / Sorting

Categories

Brand

Accreditations

Product Type

Regulatory Method

Instrument / Test

Analyte - Single / Multi

CAS #

Analyte / Component

319 Items found

Per Page:
Sort by:
WS - EDB/DBCP/TCP - Blind WS - EDB/DBCP/TCP - Blind
SKU: QCO-007-4B

WS - EDB/DBCP/TCP - Blind

Login to view pricing
  • Brand NSI
  • Matrix P/T Methano
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Unregulated VOCs - Blind WS - Unregulated VOCs - Blind
SKU: QCO-007-3B

WS - Unregulated VOCs - Blind

Login to view pricing
  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Regulated VOCs - Blind WS - Regulated VOCs - Blind
SKU: QCO-007-12B

WS - Regulated VOCs - Blind

Login to view pricing
  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Regulated SOCs - Blind WS - Regulated SOCs - Blind
SKU: QCO-006B

WS - Regulated SOCs - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Toxaphene (Total) - Blind WS - Toxaphene (Total) - Blind
SKU: QCO-005-6B

WS - Toxaphene (Total) - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Chlordane (Total) - Blind WS - Chlordane (Total) - Blind
SKU: QCO-005-5B

WS - Chlordane (Total) - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Organonitrogen Pesticides - Blind WS - Organonitrogen Pesticides - Blind
SKU: QCO-005-3B

WS - Organonitrogen Pesticides - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Organochlorine Pesticides - Blind WS - Organochlorine Pesticides - Blind
SKU: QCO-005-12B

WS - Organochlorine Pesticides - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - PCBs - Blind WS - PCBs - Blind
SKU: QCO-003B

WS - PCBs - Blind

Login to view pricing
  • Brand NSI
  • Matrix Acetone
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Trihalomethanes - Blind WS - Trihalomethanes - Blind
SKU: QCO-002B

WS - Trihalomethanes - Blind

Login to view pricing
  • Brand NSI
  • Matrix PT Methano
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Carbamate Pesticides - Blind WS - Carbamate Pesticides - Blind
SKU: QCO-001B

WS - Carbamate Pesticides - Blind

Login to view pricing
  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
FOGs by IR - Blind FOGs by IR - Blind
SKU: QCI-199B

FOGs by IR - Blind

Login to view pricing
  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Gravimetric and/or Volumetric
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure