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Scheduled Proficiency Testing & PT Express™ for Wastewater Testing

NSI is a globally trusted brand for laboratory quality control standards and proficiency tests. Routine use of our Certified Reference Materials (CRMs) and Proficiency Testing (PT) standards to monitor analytical performance will defensibly document data quality and support accreditation requirements.

We are laser-focused on developing, manufacturing, and delivering unique ISO-accredited CRMs that are not only stable but also easy to implement into routine testing workflows.

Interested in our GGA Concentrate Snips™? Simply snip open the tube and pour contents directly into a 300 mL BOD bottle. No measurements required, no contamination risk. Watch the demonstration video below to learn more!

Our Wastewater Standards Are Convenient & Easy-To-Use
Some unique wastewater product concepts include:

  • Pre-measured, single-use reference materials that prevent laboratory errors and rework
  • Ready-to-use CRMs requiring no preparatory steps, saving time and effort
  • Cocktailed, multi-parameter CRMs that reduce the number of CRMs needed in typical laboratory testing

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Demand Concentrate - Blind Demand Concentrate - Blind
SKU: QCI-026B

Demand Concentrate - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
BTEX by PID Wastewater PT Standard (2 pack) BTEX by PID Wastewater PT Standard (2 pack)
SKU: PEO-150

BTEX by PID Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
Trace Level Mercury (2 pack) Trace Level Mercury (2 pack)
SKU: PEO-137

Trace Level Mercury (2 pack)

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  • Brand NSI
  • Matrix Nitric acid
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack) Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack)
SKU: PEO-136

Nitroaromatics/Nitramines in Water Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
Low Level PAHs Wastewater PT Standard (2 pack) Low Level PAHs Wastewater PT Standard (2 pack)
SKU: PEO-135

Low Level PAHs Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Acetonitile
  • Certification Single: Grav. w/Analytical Confirmation
Organochlorine Pesticides Wastewater PT Standard (2 pack) Organochlorine Pesticides Wastewater PT Standard (2 pack)
SKU: PEO-122

Organochlorine Pesticides Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Ethyl acetate
  • Certification Single: Grav. w/Analytical Confirmation
Base/Neutrals Wastewater PT Standard (2 pack) Base/Neutrals Wastewater PT Standard (2 pack)
SKU: PEO-121

Base/Neutrals Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Acetone/Methanol soution
  • Certification Single: Grav. w/Analytical Confirmation
Volatiles Wastewater PT Standard (2 pack) Volatiles Wastewater PT Standard (2 pack)
SKU: PEO-120

Volatiles Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
Supplemental Volatiles Wastewater PT Standard (2 pack) Supplemental Volatiles Wastewater PT Standard (2 pack)
SKU: PEO-119

Supplemental Volatiles Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
NPW - Alcohols in Water NPW - Alcohols in Water
SKU: PEO-104

NPW - Alcohols in Water

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  • Brand NSI
  • Matrix Water
  • Certification Single: Grav. w/Analytical Confirmation
Low Level Halocarbons Wastewater PT Standard (2 pack) Low Level Halocarbons Wastewater PT Standard (2 pack)
SKU: PEO-103

Low Level Halocarbons Wastewater PT Standard (2 pack)

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  • Brand NSI
  • Matrix Methanol solution
  • Certification Single: Grav. w/Analytical Confirmation
Gasoline Range Organics (GRO) Wastewater PT Standard (2 pack) Gasoline Range Organics (GRO) Wastewater PT Standard (2 pack)
SKU: PEO-102

Gasoline Range Organics (GRO) Wastewater PT Standard (2 pack)

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