Peel Plate Microbial Tests


Food and Water Microbiology Made Easy

Designed and developed for sanitation verification, product shelf life monitoring, and to be early warning of pathogen risks, Peel Plate Microbial tests are simplified alternatives to conventional microbiological testing.

Peel Plates use gold-standard method formulation and procedures and are available for targeting a variety of bacterial indicators to supplement most food safety programs. The tests and indicator results can be documented, recorded, and proactively reacted to in your effective food safety and consumer protection programs.

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Validated food matrices include dairy products, meat, produce rinses, water, and food environmental monitoring. With Peel Plate, you receive the same trusted results without the media prep time and labor. In addition, Peel Plates use an easy to interpret color development to determine bacterial growth, rather than a more subjective gas production of some other methods.

Each single-use microbial test contains prepared media in a shallow dish with an adhesive top cover. To plate a food or water sample, peel up the adhesive to expose the media, pipette into the center of the plate, watch the sample wick and spread into the media. The test gels solidify within 10 seconds (30 seconds for High Volume test). Plates are designed for uniform heat and air flow and with an air space above growth to allow opening and picking of growth for additional microbiological procedures and identification.

Peel Plate certifications and acceptances include Association of Analytical Communities (AOAC), and Pasteurized Milk Ordinance (PMO) and MicroVal on select plates and foods. MicroVal is a European-based validation body that certifies according to International Standards Organization (ISO) reference standards.

Peel Plate AC Test

Peel Plate AC nutrient rich non-selective media encourages the growth of all aerobic, oxygen consuming bacteria. Aerobic counts are used as tools in identifying sanitation issues, potential shelf life issues, and are considered elevated listeria risk indicator in food production environmental monitoring. Peel Plate AC are AOAC-RI validated and PMO approved for a variety of dairy, food and environmental samples. Aerobes appear as red spots with a defined center within 48 hours at 32 or 35ºC; size may vary.
Peel Plate CC Test
Total Coliform Peel Plate CC selective media encourages the growth of coliform bacteria. The presence of coliform is an indicator of unsanitary conditions in raw products. Coliform are killed by effective heat steps in food processing.  Coliform appear as red colonies within 24 hours at 32 or 35°C. Coliforms are closely regulated in dairy and some foods the US and Peel Plate Coliform tests are listed in the PMO.
Peel Plate EB Test
The Enterobacteriaceae bacteria are a family of gram negative bacteria encompassing coliform, E. coli, Shigella, Salmonella, and Yersinia. These bacteria indicate unsanitary conditions in raw products and are killed by heat steps in food processing. EB testing is used as a post-production verification of process and pathogen risk used, for example, to test dry milk powder and infant formula.  EB is regulated globally, similar to coliform/E.coliregulation in the US. Incubation 24 to 48 hours at 37°C produce multiple colored round growth spots that are all recorded as EB. High Volume plates are available.

To learn more, visit the Peel Plate EB page.

Peel Plate EC Test
Generic E.coli, considered a fecal risk indicator, is a subset of coliform and are differentiated with the Peel Plate EC formulation.  Peel Plate EC are AOAC-RI validated for a number of dairy products, meat rinses, water testing, and environmental sampling. Coliform appear as round red colonies and E. coli as round blue colonies within 24 hours at 35°C and the sum of red and blue are total coliform.
Peel Plate HET Test
Heterotrophs are aerobic bacteria that are more associated with water and nutrient depleted matrices. Peel Plate HET nutrient depleted media encourages the growth of heterotrophic organisms in water. Incubation at 25°C produce red growth spots within 5 to 7 days. Heterotrophs are used as indicators to assess biofilm build up, and nutrient leaching in water distribution systems of food plants and water municipalities.
Peel Plate YM Test
Peel plate selective media with antibiotic prevents the growth of bacteria, and encourages the growth of fungi. Fungi organisms are primarily a food spoilage risk but can also produce toxins. Peel Plate YM are AOAC-RI validated for a variety of dairy products, fresh fruits and vegetables, juices, RTE foods, and environmental surfaces. Incubation 3 to 5 days at 25ºC produce green/blue growth spots. High Volume plates are available.

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      • Ready-to-use media – self-wicking, no spreader device required
      • 12 month room temperature stability when stored in re-sealable foil zip bag*
      • Buffered media formulation for robust performance with neutralizing buffers – pH adjustments not required for most samples
      • Convenient plate stacking and built-in air space design for improved air circulation and picking colonies
      • Date tracking and analysis available with use of our Peel Plate Colony Counter

    *High Volume tests and certified milk labs require refrigerated storage (0 – 4.5°C)

Regulatory Info

  • Coliform and Aerobic tests voted by the National Conference on Interstate Milk Shipments (NCIMS) for inclusion into Pasteurized Milk Ordinance (PMO).