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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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Midpoint Check w/CLP Surrogates (5X1.5mL) Midpoint Check w/CLP Surrogates (5X1.5mL)
SKU: WL-514FP

Midpoint Check w/CLP Surrogates (5X1.5mL)

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  • Brand NSI
  • Concentration 50 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Midpoint Check w/Surrogates - SW-846  (5X1.5mL) Midpoint Check w/Surrogates - SW-846  (5X1.5mL)
SKU: WL-513FP

Midpoint Check w/Surrogates - SW-846 (5X1.5mL)

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  • Brand NSI
  • Concentration 50 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Ready Stock 200 - SW-846 Surr (5mL) Ready Stock 200 - SW-846 Surr (5mL)
SKU: WL-507

Ready Stock 200 - SW-846 Surr (5mL)

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  • Brand NSI
  • Matrix Methylene chloride
  • Concentration 200 ug/mL
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
Pesticide Spike II Pesticide Spike II
SKU: WL-445

Pesticide Spike II

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike w/o Benzidines (50mL) TCL BNA LCS Spike w/o Benzidines (50mL)
SKU: WL-408-50X

TCL BNA LCS Spike w/o Benzidines (50mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike (50mL) TCL BNA LCS Spike (50mL)
SKU: WL-408-50

TCL BNA LCS Spike (50mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike w/o Benzidines (25mL) TCL BNA LCS Spike w/o Benzidines (25mL)
SKU: WL-408-25X

TCL BNA LCS Spike w/o Benzidines (25mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike (25mL) TCL BNA LCS Spike (25mL)
SKU: WL-408-25

TCL BNA LCS Spike (25mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike w/o Benzidines (10mL) TCL BNA LCS Spike w/o Benzidines (10mL)
SKU: WL-408-10X

TCL BNA LCS Spike w/o Benzidines (10mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
TCL BNA LCS Spike (10mL) TCL BNA LCS Spike (10mL)
SKU: WL-408-10

TCL BNA LCS Spike (10mL)

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
625 LCS Spike (2 x 25mL) 625 LCS Spike (2 x 25mL)
SKU: WL-397X

625 LCS Spike (2 x 25mL)

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Concentration 100ug/mL
  • Matrix Methanol/Methylene
  • Raw Material >95% min; as available
625 LCS Spike (2 x 25mL) 625 LCS Spike (2 x 25mL)
SKU: WL-397

625 LCS Spike (2 x 25mL)

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Concentration 100ug/mL
  • Matrix Methanol/Methylene
  • Raw Material >95% min; as available
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