Some microbiologists call it a 55 mm plate?

In reality, the “55 mm” refers to the diameter of the plate… when measuring the lid side.

Others call it “60 mm plate”?

Probably because they measured the same plate, but from the other side… the one with the agar! Some even call it a 65 mm plate, depending on where they measure it.


RODAC/ Contact Plates

Available in 65 *12 mm,Outside Grid

  • Omark® Contact Plate used for determining surface microbial contamination (Surface Sampling) & Environmental Monitoring

  • Dome shape Enables Fantastic Contact with the surface

  • Microorganisms will adhere when the agar media is put up against surface

  • Each plate samples 3.99 sq inches ,which is easily converted to number of microbes per sq inch

  • Lid in VENT Position

    • Mandatory for incubation under microaerophilic or anaerobic conditions

    • Suitable also for short-term incubation under aerobic conditions

  • Marked numerically in one direction and alphabetically in the other

  • Dishes have a raised agar bed for surface contact

  • Disposable polystyrene

  • Grid consists of sixteen 10 x 10 mm squares

  • For bio-burden counts on working surface

  • Clear top and bottom viewing surfaces

  • Polystyrene Disposable Petri dish for general microbiological use

  • Molded from medical grade virgin polystyrene

  • Manufactured under ISO class 8 clean room facility

  • Domed base with grid provides convex media surface

  • Gamma sterilized

  • US FDA 21 CFR compliant

  • Compatible to various brands of air sampler