Vol. 1, Issue 8 ‣ November/December 2024
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CompactDry™ vs Petrifilm™: A Comparison of Enumeration Procedures
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Today, we delve into a detailed workflow comparison of two ready-to-use dehydrated culture media systems: CompactDry™ and Petrifilm™. We'll explore their respective workflows, highlighting their efficiency, accuracy, and suitability for various applications. Join us as we uncover the differences and similarities between these two popular culture media solutions.
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Remove the protective cap from the CompactDry™ plate. CompactDry™ plates do not require refrigeration, and are ready to use immediately.
Then, label each plate with a dilution factor, for example from 10⁻¹ to 10⁻⁸
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Once our dilutions are prepared, we are ready to plate.
Simply lift the cover of one CompactDry™ and use a pipet to transfer 1ml of solution into the center of the plate.*
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* A modified workflow is used for CompactDry SL (Cat. no. 54085). See IFU for details.
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CompactDry™ plates do not require spreading or stamping. The sample will diffuse automatically into the CompactDry™ plate, transforming the dry medium to gel. The space between the media and the cover lid allows colonies to form three dimensionally.
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Re-cap the plate, and the tray is ready for incubation. The unique design of CompactDry™ plates allows unlimited stacking.
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Count the colonies by hand or by using The Wizard™ automated colony counter. The Wizard™ is a standalone plate reader with LIMS connectivity capabilities for use with CompactDry™ plates.
You can see how The Wizard™ CompactDry™ Reader works in our video.
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Product Spotlight: CompactDry™
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This product line is designed to save technician time while performing colony counts on food, beverage, cannabis, cosmetics, environmental, meat, and raw material samples.
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- Rigid Transparent Cassette With Removable Lid: Keeps colonies intact with space between media and lid. Easily removable lid for quick inoculation. Clear colony counting through gridded back surface.
- Self-Diffusing Media: 1ml sample turns dry media into gel that diffuses evenly without a spreader.
- Designed to Stack: Save incubator space with stackable design, minimizing contamination risk.
- Room Temperature Storage: No refrigeration needed; long shelf life!
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CompactDry™ Yeast/Mold Rapid (YMR) for colony counts
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CompactDry™ Total Count Rapid (TCR) for aerobic colony counts
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CompactDry™ E. Coli (EC) and Coliforms for colony counting
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EnviroTrans™
Letheen Broth, Tube with Attached Swab, 5ml
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Recommended for the detection of microorganisms found on surfaces. Neutralizes phenols, formalin, and ethanol. May be used with Compact Dry™ or 3M Petrifilm™. Contains some growth factors.
A ready-to-use swab and tube pre-filled with your choice of five solutions to fit your specific needs! Collect and transport environmental samples with efficiency and ease.
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Flip-Lok™ Vial, empty, Sterile, Clarified Polypropylene, with Hinged Cap
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Practical alternative to pre-filled dilution bottles. Feature convenient graduation marks at 90ml and 99ml. The lid forms a tight seal and can be operated with one hand.
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Video & Catalog Spotlight:
CompactDry™
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Watch our in-depth CompactDry™ vs. Petrifilm™ comparison video on our YouTube channel.
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The CompactDry™ plate line presents a variety of organism-specific or total count tests, packaged nicely in a sophisticated and sturdy cassette.
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FOOD AND BEVERAGE PRODUCT MANAGER
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Mark is the Food and Beverage Product Manager at Hardy Diagnostics, bringing a wealth of experience from his extensive background in microbiology and the food industry. Passionate about advancing food protection, Mark continues to drive excellence and innovation in his role at Hardy Diagnostics.
Do you have a suggestion, comment, or question? Please contact Mark here.
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"A Culture of Service"
Hardy Diagnostics, 1430 West McCoy Lane, Santa Maria, CA, 93455, USA, +1.800.266.2222
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