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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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SAE 40W Motor Oil Std. SAE 40W Motor Oil Std.
SKU: UST-505

SAE 40W Motor Oil Std.

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
SAE 30W Motor Oil Std. SAE 30W Motor Oil Std.
SKU: UST-504

SAE 30W Motor Oil Std.

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
TNRCC 1006 Retention Time Std TNRCC 1006 Retention Time Std
SKU: UST-503

TNRCC 1006 Retention Time Std

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
TX TPH Matrix Spike Mix TX TPH Matrix Spike Mix
SKU: UST-502

TX TPH Matrix Spike Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
TX TPH Calibration Mix TX TPH Calibration Mix
SKU: UST-501

TX TPH Calibration Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
TX TPH Locator Standard TX TPH Locator Standard
SKU: UST-500

TX TPH Locator Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
AZ Retention Time Mix AZ Retention Time Mix
SKU: UST-490

AZ Retention Time Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
TX-1005 Calibration Standard TX-1005 Calibration Standard
SKU: UST-480

TX-1005 Calibration Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Diesel Fuel No. 2 Diesel Fuel No. 2
SKU: UST-470

Diesel Fuel No. 2

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
GRO Gasoline Comp. Std (TN/MS) GRO Gasoline Comp. Std (TN/MS)
SKU: UST-460

GRO Gasoline Comp. Std (TN/MS)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
EPH by GC/FID (TN) EPH by GC/FID (TN)
SKU: UST-450H

EPH by GC/FID (TN)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
MA EPH Spike Mix MA EPH Spike Mix
SKU: UST-430H

MA EPH Spike Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
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