Water Bottle Bacteria Experiment

Periodically a bleach solution may be employed to kill bacteria.

Water bottle bacteria experiment. Typically the bottle is washed out with warm soapy water after each use. While conducting these studies comparing ammonia kits is also another type of a side study. Reusing water bottles is the practice of refilling and reuse of plastic or glass water bottles designed for one use with tap water for multiple uses. If you re sick you could be putting sickness causing bacteria back into the container and if someone else drinks from it they could get sick too.

Also i am doing this experiment in the winter when the temperatures are cooler and bacterial growth tends to be slower than during the hot summer months. Remove the cover from the petri dish and lightly rub the. More than 300 000 colony forming units per square centimeter cfu sq cm. Reusing single use bottles is a common domestic practice.

Do this test 3 times over to get the best of 3 results and for more consistent results. A testing of bacteria content in the reusable drinking water bottles used by students at a tertiary education institute was also conducted. Thirty water samples were collected from the bottles figure 3 at around 10 00 am in the morning which is also about 3 4 hours after the bottles have been illed up with water. What exactly does that mean.

During the experiment can you feel if the saliva goes into the water bottle. Setup few tanks dose ammonia dose bacteria from bottle and watch them do their job. Coli found in 17 percent. You may be able to feel it but most of the time you won t even notice.

They discovered bacteria contamination in 83 percent of the used plastic bottles. Ice a slice of lemon and bacteria based on the 12 water bottles we tested we found that reusable drinking containers may be crawling with an alarming number of viable bacteria cells. They tested for the following bacteria. It depends on how much you are paying attention.

The water bottles are stored in their swim bags with moldy dirty towels or they rattle under the seats of their parents cars. Prepare the agar according to the directions on the label then pour enough to cover the bottom of each petri dish. Most prevalent were staphylococcus aureus found in 27 percent of the bottles and e. While it s true that bacteria can grow in unwashed bottles reports of toxic chemicals leaching into the water from pet polyethylene terephthalate bottles after multiple refillings have been.