Skip to Main Content

Select country

Select your country

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.

Search by Category

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.

Share Your Experience — Achieve Confidence in Microbiology Testing

Have you used our Microbiology Certified Reference Materials in your lab? Your feedback matters! By leaving a review on SelectScience®, you’re not only helping us improve—you’re also helping scientists worldwide make informed decisions.

Leave a review by July 31, 2026 and you’ll be entered for a chance to win a $400 Amazon® gift card, courtesy of SelectScience®.

LEAVE A REVIEW

* Giveaways and eligibility administered by SelectScience®. Terms and conditions may apply.

Categories and filters

Filter / Sorting

Categories

Brand

Classification

Accreditations

Product Type

Regulatory Method

Instrument / Test

Analyte - Single / Multi

CAS #

Strain

Analyte / Component

Microorganism

5,368 Items found

Per Page:
Sort by:
  • Top rated
  • KIT
WP-15N,WP-3,MN-6 WP-15N,WP-3,MN-6
SKU: TM-SETN

WP-15N,WP-3,MN-6

Login to view pricing
  • Brand Spex
  • Matrix Multiple
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
SET OF 3; WP-15, WP-3, MN-6 SET OF 3; WP-15, WP-3, MN-6
SKU: TM-SET

SET OF 3; WP-15, WP-3, MN-6

Login to view pricing
  • Brand Spex
  • Matrix Multiple
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
4 Component Trihalomethanes Mix, 200 µg/mL 4 Component Trihalomethanes Mix, 200 µg/mL
SKU: THM-LM4C-A1

4 Component Trihalomethanes Mix, 200 µg/mL

Login to view pricing
  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 200 µg/mL
  • Certification Single: Gravimetric
4 Component Trihalomethanes Mix, 2,000 µg/mL 4 Component Trihalomethanes Mix, 2,000 µg/mL
SKU: THM-HM4C-A1

4 Component Trihalomethanes Mix, 2,000 µg/mL

Login to view pricing
  • Brand HPS
  • Matrix Methanol-P&T
  • Concentration 2,000 μg/mL
  • Certification Single: Gravimetric
CONDUCTIVITY (TDS AS KCL) 650 PPM  (500 mL) CONDUCTIVITY (TDS AS KCL) 650 PPM  (500 mL)
SKU: TDS-2-500

CONDUCTIVITY (TDS AS KCL) 650 PPM (500 mL)

Login to view pricing
  • Brand Spex
  • Matrix H2O
  • Concentration 650 PPM
CONDUCTIVITY (TDS AS KCL) 65 PPM (500 mL) CONDUCTIVITY (TDS AS KCL) 65 PPM (500 mL)
SKU: TDS-1-500

CONDUCTIVITY (TDS AS KCL) 65 PPM (500 mL)

Login to view pricing
  • Brand Spex
  • Matrix H2O
  • Concentration 65 PPM
  • Top rated
TCLP STANDARD 1, 500ML (NO HG) TCLP STANDARD 1, 500ML (NO HG)
SKU: TCLP-500N

TCLP STANDARD 1, 500ML (NO HG)

Login to view pricing
  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
TCLP STANDARD 1 TCLP STANDARD 1
SKU: TCLP-500

TCLP STANDARD 1

Login to view pricing
  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
TLCP STANDARD 1, 125ml (NO HG) TLCP STANDARD 1, 125ml (NO HG)
SKU: TCLP-100N

TLCP STANDARD 1, 125ml (NO HG)

Login to view pricing
  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
  • Top rated
  • KIT
TCLP STANDARD 1 TCLP STANDARD 1
SKU: TCLP-100

TCLP STANDARD 1

Login to view pricing
  • Brand Spex
  • Matrix 2% HNO3
  • Raw Material Five 9s & Purification as available
  • Certification Single: Direct ICP Analysis
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure