Science Fair Projects

Studying Clean: Determining the Effectiveness of Six HE Laundry Detergents upon Various Stains on White Cotton


The objective: Determining what brand of HE liquid laundry detergent is most effective at removing a variety of stains. Creating a process to quantify the cleaning power of the detergents tested.


Six test stains (lipstick, BBQ sauce, mustard, shoe polish, grease, wine) were each applied to seven different shirts. An image of each stained shirt was recorded using a webcam and analized in Adobe Photoshop. Each shirt was assigned one of the six detergents tested (Cheer, Purex, Wisk, Gain, All, Tide) with the seventh saved as a control using water. Each shirt was washed with its respective detergent. An image of each washed shirt was recorded and analized.


In the end, I obtained data for 10oC, 23oC, 40oC, 60oC. Data were in the form of pH over time, so I had to The Tide was on average most effective at removing the various stains, followed closely by All. In general, Tide was more effective at removing the organic stains while All was more effective at removing inorganic stains. Purex was worst at removing stains.


Certain detergents are most effective on cleaning specific types of stains. Detergent manufacturers must decide whether to focus specific fabric or stain-types, or to create a more general purpose detergent that is less effective overall. For an accurate overall evaluation of the detergents, the tests will need to be repeated on different fabric types.

This project is to determine the effectiveness of six HE laundry detergents upon various stains on white cotton.

Science Fair Project done By William R. Ito


Related Projects : Demolishing Dental Bacteria, Kimchi, Spicy Korean Culture, Staph Aureus, Does the Surface Clarity of Plastic Bottles Affect Solar Water Disinfection, Effects of Temperature on Bacterial Pigmentation, Do Bacteria Like Gasses, Study of the Effects of Green Tea on Oral Bacteria, Mystery Behind Bacteria Levels in Gym Equipment, Fungus Among Us, Yeast Past Its Code Date, Meat That's Raw, pH Tolerance of Microbes, Growing Crystals under Variable Conditions, Controlling Crystal Growth, Comparing the Differences of Clarity of Fingerprints, Effectiveness of Recycled Materials as Thermal Insulation, The Greater Insulator, How Fish Achieve Neutral Buoyancy, Frequency Relationship of Notes in Musical Harmony, Standing Waves


<<Back To Topics Page........................................................................................>> Next Topic



Copyright © 2013 through 2015