How to Make Urine PH Test Paper
Use potential of hydrogen (PH) paper to determine the level of acidity or basicity of a solution. Some people purchase urine test paper, also referred to as strips, to test the pH level of their urine---an important tool in testing for certain afflictions. Use a few household items to make your own at home.
Instructions
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Shred or tear a head of red cabbage, putting the pieces into a blender.
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Add 2 cups of hot water.
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3
Purée the mixture of cabbage and water in the blender.
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Strain the cabbage/water solution with a mesh strainer, separating it from any leftover bits and pieces of cabbage, then pour the mixture into a bowl. This will serve as your pH indicator.
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5
Cut a coffee filter into 1/2-inch-wide strips.
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Soak the coffee strips in your cabbage/water solution for about three to four hours. These coffee strips will become your urine pH paper.
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Place the wet strips on a stain-proof or disposable tray, and allow then to dry completely. Leave a little space between the strips so they do not overlap.
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Make a chart for reading results obtained with your urine test strips. PH 2 will show a pink or reddish-orange color, pH 4 will appear dark red to purplish, pH 6 will turn violet and pH 8 will turn blue. A pH of 10 will show as a bluish-green shade, while a pH of 12 will turn a shade of yellowish green.
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Tips & Warnings
If you've been asked to test your urine pH because of a health condition, ask your doctor about the accuracy of homemade pH papers before you use them.
Be careful, when removing your pH paper from the solution because the cabbage water may stain clothes and surfaces.
You can use ordinary soap and water to clean the cabbage water stains off your hands. However, using a pair of tongs to handle the wet test papers can prevent the temporary staining of your skin.
Use homemade pH test papers with more than just urine: Test the pH levels of a full range of liquids, including juices, milk, bleach and saliva.
PH levels of 1 through 6 are acidic. Levels of seven and above are basic.
