Interview: 30 Years of Petrifilm Technology

By Sangita Viswanathan
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December 3, 2014


• Categories: Food Labs

3M Food Safety celebrated a milestone this past summer – the 30th anniversary of its Petrifilm^TM Plates – currently the worldwide standard for fast, simple, easy-to-interpret indicator testing.

First introduced in 1984, the 3M Petrifilm Plate technology has long been the industry standard for efficient and reliable colony interpretation and enumeration for the F&B industry. In a chat with Food Safety Tech, John A. Wadie, U.S. Marketing Development Manager for 3M Food Safety Department, talked about the adoption of Petrifilm continuing to grow worldwide, which spoke to the product’s value and utility to the industry. We present below excerpts from a Q&A.

FST: How has the food safety environment changed in the last 30 years?

Wadie: The food industry has become increasingly global, with great awareness among consumers about food safety issues. The combination of these trends, combined with constant information dissemination on a variety of food safety issues, has placed enormous pressure on food companies to test more, do it faster and do it more efficiently. From a regulatory stand point also, there is much more pressure on food companies to proactively maintain and manage stringent food safety procedures, and testing plays a big role in managing this. The biggest change has occurred with the speed of testing. Alongside even faster testing, is the demand for accurate and consistent testing and results.  

FST: What attributes of Petrifilm Plates have made it so popular over the last 30 years?

Wadie: With more than 2 billion units sold and counting, 3M Petrifilm Plates are the world’s leading food indicator testing technology. They are currently in used by all kinds of food processors, universities, governments and third-party contract labs in no fewer than 65 countries.

The standout feature of the product, and probably the primary reason for its longevity, is its simplicity, due to the fact there is no need for customers to prepare, purchase or store agar dishes. The technology has also received numerous country-specific, as well as global, validations from multiple, rigorous sources. With Petrifilm Plates, you also ensure the consistency and accuracy of test results from technician to technician, and between plant locations, and these are very important attributes in the current multi-location setting of food companies.

FST: Against the backdrop of FSMA, how is food safety testing set to change in the near future?

Wadie: With new regulations, there’s even greater focus on food safety testing, and getting fast, consistent and accurate results. The regulations, and the standards benchmarked under GFSI, are also laying emphasis on how the testing is done, where it’s done, and who is doing it.

The next 30 years will continue to bring faster and more accurate methods of testing as well as improvements to the preparation process. With greater innovation and rapid detection technologies, it may soon be possible to do inline testing – to identify pathogens and bacteria within production lines as opposed to testing being a separate step.