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Explore the broadest selection of analytical reference materials and proficiency testing (PT) from the leading brands in certified and analytical reference materials: Spex, NSI, HPS, and Chiron.

Our harmonized product development and custom capabilities are tailored to bring you innovative products to help meet your unique application needs.

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WS - Toxaphene (Total) WS - Toxaphene (Total)
SKU: QCO-005-6

WS - Toxaphene (Total)

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  • Brand NSI
  • 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

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

WS - Chlordane (Total)

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  • Brand NSI
  • 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

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

WS - Organonitrogen Pesticides

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  • Brand NSI
  • 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

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

WS - Organochlorine Pesticides

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

WS - PCBs - Blind

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

WS - PCBs

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

WS - Trihalomethanes - Blind

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  • Brand NSI
  • Matrix PT Methano
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
WS - Trihalomethanes WS - Trihalomethanes
SKU: QCO-002

WS - Trihalomethanes

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  • Brand NSI
  • Matrix Methanol
  • 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

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  • Brand NSI
  • Matrix Methanol
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
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