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Transcript of GROUP-4-PROJECT
Observe how the chemicals in the swimming pool water affects Staphylococcus epidermidis, a bacteria that benefit human to some extend
Nguyen, Jiyeon, Miran, Seiran
2 bottle of collecting swimming pool water from two different location
Gram stain materials
Clean cotton swabs
Big Swimming pool
Small Swimming pool
No Staphylococcus epidermidis existing afterward
Due to existence of chlorine in swimming pool
-Below 0.5% water absorption
-High and low temperature
Investigate the buffer capacity of
two samples of swimming pool water
from two different locations.
-Finest crystal clear glass
-Reflect light back
-Easy to clean
at least three 50 ml beakers
50 ml distilled water
50 ml 0.1 M of NaOH(aq)
50 ml 0.1 M of HCl(aq)
two swimming pool water samples
Swimming pool water of primary has better buffer capacity
1m 9800pa, 1.5m 14700pa, 1.8m 17640 pa
Swimming pool water collected from two different location
The amount of Staphylococcus epidermidis survives after contact with swimming pool water.
Staphylococcus epidermidis collected from human skin
Bacteria in the swimming pool initially 세ㄹ
Collect two bottles of swimming pool water from two different pools
Take out some sample from each bottle by using clean cotton swabs and Swab them onto the agar plates and label the dishes
After the bacterias had grown, take some bacteria from the "human skin agar plate" and mix them with some fresh swimming pool water from the bottles.
After 1 hour, use those swimming pool water to grow bacteria
When bacterias show up on the agar plates, the Gram staining procedures can begin.
How sustainable and flexible is our school swimming pool tile ?
GRAM STAINING PROCEDURE
how sustainable our school swimming pool?
US $ 8.8 / Square Meter
US $ 14.8 / Square Meter
both found in small and big swimming pool
small swimming pool
big swimming pool
pH of both swimming pool water should be under 7
The buffer region of the swimming pool should be broad in order to protect human skin.
answer the call of nature
“Please keep our ool as it’s named”.
Chemistry: Our school swimming pool has acidic buffer but not basic buffer.
Biology: The chlorinating agents in our school swimming pools did not strong enough to kill most of the Staphylococcus epidermidis. It might allowed noxious bacteria to survive in the swimming pools water.
Design Technology: Secondary swimming pool tiles are sustainable and flexible to use but primary swimming pool tiles are not.