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pH Test Paper Roll: the pH test strip has full pH range, measures pH values in the range of 0 to 14, pH color chart intervals: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, easy to read
Material: pH paper is made of quality litmus paper, get fast and accurate results in just seconds with the quality pH test paper
Multiple Applications: universal pH paper is good teaching supply for schools, lab, also can be applied to detect fish tank, hydroponics, aquariums, industrial testing, agricultural testing, and so on
Easy to Use and Operate: remove a small test strip, touch the liquid to be tested, a few seconds later, compare the test results with the standard color on the card board, if there is no reaction can stay longer
Scroll Design: lightweight and compact reel design for convenient use and carry; Each roll length approx. 16.4 ft/ 5 m, 24 roll, totally 393.7 ft

The meaning of pH 0 to 14: pH <7 is acidic, pH = 7 is neutral, pH > 7 is alkaline.
The smaller the number, the stronger the acidity. The larger the number, the stronger the alkalinity.
Wide application:
Great teaching supply for lab, school, to test the solution of acid and alkali.
Testing your hydroponic plant growth environment.
With your children do some science experiments about acids and bases to rich scientific knowledge.
Also apply to testing household items, fish tank, aquariums, etc.
How to use:
Simply tear off a small portion of the strip press it to the object or liquid you are testing. A few seconds later, take out the paper and using the color chart, compare the color change of the paper to find out the pH level of your testing subject.
Package includes:
24 Roll pH test strips