Verify how much bacteria will breed by keeping wearing a wristband gotten by festivals and events

When wearing a wristband gotten by a festival, an event, etc. as a product of memories, it is a movie to verify how much the bacteria will grow with each time "How dirty are festival wristbands?"Has been released. The wrist band always wears seems to be covered with bacteria more than imagined.

How dirty are festival wristbands? - YouTube


People who are leaving their wrist bands acquired at festivals and events are called "Listeners".


It is this experiment to verify how long the wristband becomes filthy over time.


Subjects were Daniel with a lot of wristband on.


I will select and verify from 2009, 2010 and 2016 among a lot of wristbands.


Dr. Nick Coleman, who studies microbiology at the University of Sydney, conducts experiments.


Two people to hand Dr. Daniel's wristband to Dr..


The product of 2009 is in a state that it is ragged and has not kept its original shape.


It is like this when 3 rows are arranged. From the top, in the 2009, 2010, 2016 wristbands, the condition seems to differ greatly depending on the material.


For reference, I will try to mix nearly new brand new wrist bands that female interviewers do.


Dr. Coleman's answer, "What is the predictable result?" Is that "a large amount of bacteria are breeding".


Listening to the expectation that bacteria harmful to human health will also be included, this interview is this expression.


A wristband attached to a special liquid ......


It is agitated by vortexing.


The liquid after stirring is cloudy due to dirt on the wristband.


After dropping the liquid with the wrist band removed, onto the agar medium ... ...


I will keep it with a heat insulator for several days.


On the first day, Chirley was in such a state ......


Every time I follow the sun, bacteria will appear and the color will become darker.


That is why the cultivation test of the bacteria adhering to the three wrist bands is completed.


It is a woman who consolidates to Dr. Coleman 's words "Your wristband was the worst", but this is a joke.


What is going on in Petri dish means that different kinds of bacteria emerge and the color changes.


It's yellowMicrococcusBacteria. This is not toxic.


However, bacteria spreading white are toxic ones. In addition, it is said that the bacteria kill each other and compete to expand the habitat area.


The Petri dish of the wristband of 2016 is relatively clean.


So the number of bacteria is 200 million in 2009, 600 million in 2010 and 80,000 in 2016.


To the question "What do you think of those who keep wearing the wristband ...?"


"It is certain that there will be toxic bacteria in time, and it will certainly increase, I will truncate the wristbands and keep only memories," Dr. Coleman replied.