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Generic American Scientific Litmus Paper Red and Blue, Acid and Base Indicator Test Strip, 200 pcs per Bundle, Classroom Size Pack, Learning Laboratory Activity for Science Kids and Teens
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About Generic American Scientific Litmus Paper Red And
Litmus Paper Red and Blue, Acid and Base Indicator Test Strip come with 200 pieces variety pack, 100 test strips each color perfect for scientific demonstration for introductory chemistry lessons. The litmus test using litmus paper is a quick and inexpensive yet complete learning method of determining whether a liquid or gaseous solution is acidic or basic (alkaline). Get your students to figure out whether your unknown chemical is an acid or base. Quick and easy to use acids and bases kit. These blue litmus paper test strips turn red when dipped into acidic solutions somewhere between the pH range of 4.5 to 8.3. and These red litmus paper test strips turn blue when dipped into alkaline/basic solutions. In general, red below a pH of 4.5 and blue above a pH of 8.3. If the paper turns purple, this indicates the pH is near neutral. Red paper that does not change color indicates the sample is an acid. Blue paper that does not change color indicates the sample is a base. Classroom size pack that comes with 100 test strip each color good for group discussion, home school, or laboratory activity. br>While litmus paper is most often used to test pH of liquids, it can also be used to test gases if the paper is dampened with distilled water before exposure to the gas. The litmus test is quick and simple, but it suffers from a few limitations. First, it's not an accurate indicator of pH; it does not yield a numerical pH value. Instead, it roughly indicates whether a sample is an acid or a base. Second, the paper can change colors for other reasons besides an acid-base reaction.
