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Which household cleaning product is the most effective against bacteria?,…
Which household cleaning product is the most effective against bacteria?
Background Information
Household cleaning Product:
Hand sanitiser: An antimicrobial liquid used to disinfect hands. This gel typically contains alcohol that kills bacteria.
antibacterial spray: this product supposedly kills 99% of bacteria. it is sprayed on surfaces to disinfect and clean them
household bleach: A strong disinfectant that is used to remove stains from clothes
Bacteria:
Bacteria are microscopic organisms that cannot be seen by humans. There are thousands of bacteria inside and outside every human being. Bacteria are commonly found in food, water, and soil, which is why we need to be very careful when deciding what to eat.
Ecoli: Ecoli is a common bacteria that often lives in the stomachs of mammals. It is usually harmless but can sometimes cause diarrhea and vomiting. This disease is often caused by poor food hygiene.
Some bacteria are harmful to humans and cause disease. These are called pathogenic bacteria. These bacteria can be ingested due to poor hygiene or poor food sanitation.
Most Effective Against:
"Most effective" is a measurement of the cleaning product's effectiveness in removing bacteria from a surface, as this is something they claim to do well.
Variables
Dependent Variable:
How effective cleaning products are against bacteria. Done with agar plates
Controlled Variables:
Amount of household product used
Amount of bacteria used
Area streaked in the agar plate with the bacteria
The procedure for measuring the amount of bacteria cultivated with the cleaning products
The period of time bacteria cultivates for
Temperature the bacteria is cultivated at
Independent Variables:
Different types of cleaning products
Possible Errors
Possible Random Errors:
Zone of inhibition can be measured with the ruler incorrectly
Inaccuracy of measured amount of cleaning product
Incorrect streaking, causing damage to the agar plates
Contamination of materials
Possible Systematic Errors:
Not enough time to complete the experiment
Ruler can be calibrated incorrectly
Incubator can have faults
Bacteria in the environment can affect the agar plates
Not have the equipment requested
Equipment requested are faulty
Methods
Test the concentrations of when a specific household cleaning product is most effective against bacteria
Test various cleaning products and determine which one is the most effective against bacteria
Use agar plates for testing
Zone of inhibition
Area of total bacteria grown
Beth Daisy Diandra