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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

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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.

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319 Items found

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Full WS Organics Kit Full WS Organics Kit
SKU: PEO-009K

Full WS Organics Kit

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  • Brand NSI
  • Certification Single: Grav. w/Analytical Confirmation
EDB/DBP/TCP Drinking Water Organic Standard (2 pack) EDB/DBP/TCP Drinking Water Organic Standard (2 pack)
SKU: PEO-007-4

EDB/DBP/TCP Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix P/T Methano
  • Certification Single: Grav. w/Analytical Confirmation
Unregulated VOCs Drinking Water Organic Standard (2 pack) Unregulated VOCs Drinking Water Organic Standard (2 pack)
SKU: PEO-007-3

Unregulated VOCs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol
  • Certification Single: Grav. w/Analytical Confirmation
Regulated VOCs Drinking Water Organic Standard (2 pack) Regulated VOCs Drinking Water Organic Standard (2 pack)
SKU: PEO-007-12

Regulated VOCs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol
  • Certification Single: Grav. w/Analytical Confirmation
Regulated SOCs Drinking Water Organic Standard (2 pack) Regulated SOCs Drinking Water Organic Standard (2 pack)
SKU: PEO-006

Regulated SOCs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Toxaphene (Total) Drinking Water Organic Standard (2 pack) Toxaphene (Total) Drinking Water Organic Standard (2 pack)
SKU: PEO-005-6

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

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Chlordane in Drinking Water PT, 2 x 1.5mL Chlordane in Drinking Water PT, 2 x 1.5mL
SKU: PEO-005-5

Chlordane in Drinking Water PT, 2 x 1.5mL

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Matrix Acetone
  • Raw Material >95% min; as available
Organonitrogen Pesticides Drinking Water Organic Standard (2 pack) Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)
SKU: PEO-005-3

Organonitrogen Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Organochlorine Pesticides Drinking Water Organic Standard (2 pack) Organochlorine Pesticides Drinking Water Organic Standard (2 pack)
SKU: PEO-005-12

Organochlorine Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
PCBs Drinking Water Organic Standard (2 pack) PCBs Drinking Water Organic Standard (2 pack)
SKU: PEO-003

PCBs Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone
  • Certification Single: Grav. w/Analytical Confirmation
Trihalomethanes Drinking Water Organic Standard (2 pack) Trihalomethanes Drinking Water Organic Standard (2 pack)
SKU: PEO-002

Trihalomethanes Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix PT Methano
  • Certification Single: Grav. w/Analytical Confirmation
Carbamate Pesticides Drinking Water Organic Standard (2 pack) Carbamate Pesticides Drinking Water Organic Standard (2 pack)
SKU: PEO-001

Carbamate Pesticides Drinking Water Organic Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol
  • Certification Single: Grav. w/Analytical Confirmation
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