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We offer ISO-accredited microbiological certified reference materials. Validated and traceable cultures are no more than two passages from the primary reference culture, ensuring genetic traceability to the primary cell line. Each lyophilized culture is preserved in our proprietary Microgel-Flash™ quick dissolve matrix. Pellets dissolve instantly once hydrated. Manufactured and tested under ISO 17034 and 17025 accreditations.

Downloadable Certificates of Analysis are available from our website. Sold in packs of 10 individually vacuum-sealed microorganism pellets. Stores in the freezer at -20°C to -10°C, with a product shelf life of 18 months from the manufacture date.

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Environmental

Robust — lyophilized technique ensures strong recovery even for 44.5 ºC coliform methods.

Pharmaceutical

Stable — hydrated samples can be used for up to 8 hours.

Food & Agriculture

Our organic standards, designed around analytical needs and international methodologies, range from pesticide testing to target fragrance and flavor compounds.

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WA EPH Aromatic Hydrocarbon WA EPH Aromatic Hydrocarbon
SKU: UST-270

WA EPH Aromatic Hydrocarbon

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
WA EPH Aromatic Hydrocarbon WA EPH Aromatic Hydrocarbon
SKU: UST-260L

WA EPH Aromatic Hydrocarbon

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
MA EPH Aromatics Standard MA EPH Aromatics Standard
SKU: UST-250

MA EPH Aromatics Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Primary VPH Standard (Mass.) Primary VPH Standard (Mass.)
SKU: UST-240

Primary VPH Standard (Mass.)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
PA DEP UST Mix PA DEP UST Mix
SKU: UST-230

PA DEP UST Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Fuel Oil No.8 Fuel Oil No.8
SKU: UST-225

Fuel Oil No.8

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Fuel Oil No.8 Fuel Oil No.8
SKU: UST-220

Fuel Oil No.8

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Waste Motor Oil Waste Motor Oil
SKU: UST-185

Waste Motor Oil

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Waste Motor Oil Waste Motor Oil
SKU: UST-180

Waste Motor Oil

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Diesel Fuel Diesel Fuel
SKU: UST-145

Diesel Fuel

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Diesel Fuel Diesel Fuel
SKU: UST-140

Diesel Fuel

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Unleaded Gas Composite Unleaded Gas Composite
SKU: UST-135

Unleaded Gas Composite

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
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