Our Products / Microbiological Analysis Products / 3M Microbiology / Petrifilm
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| 3MTM PETRIFILM COLIFORM COUNT PLATES |
Whether you produce dairy products, frozen or prepared foods, you know that testing for coliforms is a traditional step in controlling overall quality. 3M Petrifilm Coliform Count Plates do the job quickly, efficiently and reliably. Within 24 hours, Petrifilm Coliform Count Plates indicate microbial levels in raw materials, in product, finished product the manufacturing environment and equipment.
Unlike other microbial testing methods, Petrifilm Plates are sample-ready to streamline the testing process. Their exclusive design features a film coated with nutrients and gelling agents so they’re ready to use at any moment.
By using labor-saving Petrifilm plates, you’ll have time to monitor critical control points more frequently. The end result is better process control and higher quality product.
 
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| 3MTM PETRIFILM E.COLI/COLIFORM COUNT PLATES |
3M Petrifilm E. Coli/Coliform Count Plates are designed to identify both E. Coli and other coliforms. With one easy test, you’ll have confirmed results in just 24 to 48 hours.
By eliminating the need for confirmation of presumptive colonies, you’ll greatly increase lab efficiency and reduce overall costs. Petrifilm plates are sample-ready and provide the most cost effective, convenient and reliable method for testing equipment, raw materias, food products and the manufacturing environment.
By using labor-saving Petrifilm plates, you’ll have time to monitor critical control points more frequently. The end result is better process control and higher quality product.
 
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| 3MTM PETRIFILM HIGH-SENSITIVITY COLIFORM COUNT PLATES |
The 3M Petrifilm High Sensitivity Coliform Count Plates is designed to accommodate a 5ml sample which allows for sensitivities as high as the organism per gram. Whether you are testing milk, ice cream, cheese or other dairy products, your lab can benefit from the labor savings of Petrifilm plates. Because one Petrifilm High Sensitivity Coliform Count Plate can take the place of three standard pour plates for one gram testing you will reduce your overall cost per test while you easily conform ho higher sensitivity standards.
3M Petrifilm High Sensitivity Coliform Count Plates are especially suited for use in facilities producing dairy products where federal and state regulations- along which strict internal quality.
 
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| 3MTM PETRIFILM ENTEROBACTERIACEAE COUNT PLATES |
Most food and beverage processors have at least one step that effectively kills pathogenic bacteria. However preventing recontamination before packaging can be challenge. 3M petrifilm Enterobacteriaceae Count Plates are effective way to access environments such as post-process food contact surfaces, and help quickly reveal potential sources of recontamination.
Enterobacteriaceae if of great importance since these organisms are involved in food spoilage, indicators of fecal contamination of food products, and some are food-borne pathogens. Since the Petrifilm Enterobacteriaceae Count Plate enumerates all coliform organisms plus potential pathogens such as Salmonella, Shigella and yersinia, it provides a more inclush/e picture of potential contamination. These heat and sanitizer-sensitive organisms should be monitored in both wet and dry plant environments.
By incorporating Petrifilm Enterobacteriaceae Count Plates in your environmental sampling program, you will have a cost-effective, ready-to-use method of detecting Enterobacteriaceae. The end result is better information and better process control for a higher quality finished product.
 
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| 3MTM PETRIFILM RAPID STAPH AUREUS COUNT PLATES |
The 3M Petrifilm Rapid Staph Aureus Count Plate provides results that are equivalent to the combined 3 plate Baird-Parker agar method and tube coagulase tests in a single-test procedure. Results are fast and confirmed as soon as 26 hours versus the 69 hours required by conventional testing. You also get confirmation of all suspect isolates in just one procedure which means the Petrifilm format reduces your total cost per test. By identifying S. aureus in food and environmental samples, Petrifilm Rapid S.aureus Count Plates give food processors an indication of product quality, sanitation effectiveness, and a risk assessment for food quality.
The rapid results delivered by the 3M test enable food processors to more effectively manage their operations. Decisions on when to release, rework or reject raw, in process and/or finished product, or when to shut down and clean processing lines, all benefit from quicker access to key microbial information. The Petrifilm Rapid Staph Aureus Count Plate extends the petrifilm product line. 3M can now supply you with aerobic, coliform, E.coli, Enterobacteriaceae, yeast and mold and S. aureus count plate tests. Bu using labor-saving Petrifilm plates you’ll have time to monitor your process more frequently. The end result can be better inventory management, better process control, a higher quality product, and increased cost savings for your facility.
 
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| 3MTM PETRIFILM YEAST AND MOLD COUNT PLATES |
Hundreds of species of food-borne yeasts and molds can exist in your food processing environment. When you consider that fact along with the wide range of growing conditions that support both air and food-borne yeast and molds, it’s easy to see how these organisms can invade dry ingredients, food processing equipment and food storage facilities.
3M Petri film Yeast and mold Count Plates can help you readily determine yeast and mold populations throughout your food processing plant. Petrifilm yeast and mold count plates are easier to use than acidified PDA methods. Their exclusive sample-ready design features films coated with nutrients, antibiotics and gelling agents so there’s no need to the addition of antibiotics or tartaric acid.
By using labor-saving Petrifilm plates, you’ll have time to monitor your process more frequently. The end result is better process control and higher quality product.
 
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| 3M AEROBIC COUNT PLATE |
Food testing is made easy with sample 3M Petrifilm Aerobic Count Plates.
Petrifilm Aerobic Count Plates are designed to determine total aerobic bacteria populations. Following a simple procedure you also can perform anaerobic testing for lactic acid bacteria in processed meats and in high-acid foods using Aerobic Count Plates
Petrifilm Aerobic Count Plates are ready to use at any moment for product or process testing or environmental monitoring. Their exclusive design features a film coated with nutrients and gelling agents.
 
By using labor-saving Petrifilm plates, you’ll have time to monitor critical control points more frequently. The end result is better process control and higher quality product.
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| 3MTM PETRIFILM SELECT E.COLI COUNT PLATES |
By eliminating the need for confirmation of presumptive colonies, you’ll greatly increase lab efficiency and reduce overall costs. Petrifilm plates are sample-ready and provide the most cost effective, convenient and reliable method for testing equipment, raw materias, food products and the manufacturing environment.
By using labor-saving Petrifilm plates, you’ll have time to monitor critical control points more frequently. The end result is better process control and higher quality product.
 
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| 3MTM PETRIFILM ENVIRONMENTAL LISTERIA COUNT PLATES |
The 3M™ Petrifilm™ Environmental Listeria (EL) Plate is a sample-ready culture medium containing selective agents, nutrients, a cold-water-soluble gelling agent, and a chromogenic indicator that facilitates Listeria colony detection.
3M Petrifilm EL plates were designed to analyze environmental samples and to help increase the efficiency of monitoring plant sanitation.
The 3M Petrifilm EL plate detects the majority of environmental Listeria, consisting of Listeria monocytogenes, Listeriainnocua, and Listeria welshimeri.*
Many organisms in the environment can be stressed by environmental conditions or sanitizers. Buffered peptone water (BPW) is used as a repair broth in conjunction with the 3M Petrifilm EL plate to resuscitate stressed Listeria without increasing their numbers. Repair in BPW is not an enrichment step.
 
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| 3MTM PETRIFILM AEROBIC COUNT PLATES LACTIC ACID BACTERIA METHOD |
Petrifilm Aerobic Count Plates can be used to enumerate lactic acid bacteria in certain foods. The unique construction of petrifilm plates makes it possible to distinguish gas-producting heterofermenters.
The addition or MRS broth to Petrifilm Aerobic Count Platesi incombination with anaerobic incubation enhances the growth to lactobacilli and other lactic acid bacteria in high acid/high sugar, raw and processed products, such as peppers, tomato based products, salad dressing and salsas, and in processed meat products.
Sample Preparation 1. Prepare at least a 1:10 dilution or greater of food sample. Weigh or pipette food product into Whirl-Pak bag, stomacher bag, dilution bottle, or other appropriate sterile container.
2. Add appropriate quantity or MRS broth diluent. Prepare according to manufacturer’s instructions. If multiple microbial tests will be run from a single 1:10 dilution, a Multiple Testing Procedure may be more convenient. (see other side)
Do not use buffers containing citrate, bisulphate, or thiosulfate; they can inhibit growth.
3. If multiple dilutions are necessary the MRS broth diluent need only be used for the final dilution step. Initial dilution steps can be made using standard diluents including Butterfields phosphate buffer (IDF phosphate buffer, 0,0425 g/L of KH2PO4 adjusted to pH 7,2), 0,1 % peptone water, peptone salt diluent (ISO method 6887), buffered peptone water (ISO method 6579), saline solution (0,85-0,90%), bisulphate free letheen broth, or distilled water. Blend or homogenize sample per current prodecure.
Inoculation 4. Inoculate Petrifilm plates with 1,0 ml of sample according to instructions in package insert.
Incubation 5. Incubate Petrifilm Plates anaerobically. Place Petrifilm plates with the clear side u into the GasPak jar in stacks of no more than 20 plates. Multiple stacks of 20 plates may be incubated in the same jar if each stack is separated by a rigid divider. Place entire jar into the incubator. Incubate plates at 300-350C (860-950F) for 48+-3h.
Interpretation 6. Petrifilm plates can be counted on a standard colony counter or other magnified light source. Count all colonies, multiply the count by the dilution factor to determine the number of colonies per mL, Refer to the interpretation Guide Section.
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| 3MTM PETRIFILM RAPID COLIFORM COUNT PLATES |
With the Petrifilm Rapid Coliform Count Plate, you’ll spend less time waiting for microbial information and more time using it to increase productivity, reduce rejects and lower production costs. Any time you can catch a major problem earlier-whether if involves incoming raw materials or products on the line-you can save yourself a lot of time, money and frustration. In fact, faster results could safeguard an entire production shift, which can save you as much as $50,000 or more in rejected product and labor.
With 3M Petrifilm Petrifilm Rapid Coliform Count Plates, you may detect catastrophic coliform contamination (>1000 colony forming units) in as early as 4-6 hours. Faster results mean you can discover and isolate a potential problem much sooner. After 6 hours you may begin to identify presumptive conforms, so you’ll know much sooner if your product or process is out of specification. After eight hours, you may begin to identify confirmed conforms. Presumptive coliform counts can be enumerated at 14 hours. Total confirmed coliform counts are available at 24 hours.
 
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