Next, collect bacteria: Swab along any surface to test your mouth, the bathroom counter, etc. To culture your microbes, lightly smear the swab in a zig-zag pattern on the surface of the agar plates. Within weeks, you should see signs of bacterial growth. Now you know where to buy petri dishes.
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Although you can purchase pre-poured agar petri dishes, preparing your own takes little time and is more cost effective. Dissolve 10 agar tablets for every ml of water. If you prefer to use agar powders, add 6. Heat the agar and water solution in a saucepan or microwave in a microwave-safe container until the solution reaches degrees F, or 85 degrees C. This is the point at which agar completely melts. Replace petri dish lids and allow agar to cool to room temperature. At this point the agar will set and your petri dishes are ready to use.
If you are preparing dishes for later use, store them in the refrigerator, stacked upside down. Students can take images, videos, and more. Stereomicroscopes show 3D images vs. They are great for first tme student use. Get your students inspired with high school physical science kits, robotics, Carolina ChemKits, and much more.
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In this activity, students engage in a game of beanbag toss—but instead of merely keeping score, they explore statistical concepts such as mean, median, mode, and range. This author provides an excellent student lab-report format, explains how it adapts to different science disciplines, and suggests simple labs to familiarize students with it.
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Read ». Product: in stock. Designed for use with multiple species of bacteria. It is recommended that prepared media plates be ordered no more than 1 to 2 weeks before use, as media plates are highly perishable. Use them within 1 month of receipt for best results. If for any reason you are not satisfied with any item, you may return it for a replacement, a refund, or credit.
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