The  3M™ Petrifilm™ Brand logo beside bowls of spinach, grated marble cheese, shrimp, strawberry yogurt, cereal, and chicken surrounding a 3M™ Petrifilm™ Plate.

Fresh science for the modern lab

View all plates

Reliable consistency and fast results with 3M™ Petrifilm™ Rapid Plates

View all plates

How to use 3M™ Petrifilm™ Plates

  • A gloved hand lifting the cover of a 3M™ Petrifilm™ Plate and a pipette dropping liquid onto the test area.
    1. Innoculate

    Eliminate media prep — plates are ready to inoculate.

  • A gloved hand holding up a 3M™ Petrifilm™ Plate, displaying its small, convenient size.
    2. Incubate

    A compact incubator is all you need.

  • A gloved hand pointing a market at a covered 3M™ Petrifilm™ Plate, demonstrating the indicator dyes that facilitate colony counting.
    3. Interpret

    Indicator dyes facilitate colony counting.


3M™ Petrifilm™ Plates: Certifications and validations

Third-party validations such as AOAC confirm that the method has been scrutinized to prove that it is reliable, repeatable and has performed equal to or better than the reference method to which it was compared.

  • AOAC® Performance Tested Methods℠ (PTM)

  • AOAC® Official Methods of Analysis℠ (OMA)

  • NF VALIDATION by AFNOR Certification

  • Health Canada Certification

A white and grey 3M™ Petrifilm™ Plate Reader Advanced machine beside three 3M™ Petrifilm™ Plates and a laptop with 3M™ Petrifilm™ Software.

Help save time and money with new automated testing processes.

Lab automation solutions

Resources for 3M™ Petrifilm™ Plates


A white and grey 3M™ Petrifilm™ Plate Reader Advanced machine beside three 3M™ Petrifilm™ Plates and a laptop with 3M™ Petrifilm™ Software.

Advanced productivity. Special price.

Get up to 38% off the new 3M™ Petrifilm™ Plate Reader Advanced starter bundle.

Request a demo and pricing details

*But hurry! Promotion ends April 30, 2021.