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www.reference.com/science/good-ph-level-drinking-water-9fa9933702224bf3

The ideal pH level of drinking water is between 6 and 8.5. The pH value of water is used to determine whether water is hard or soft. Pure water has a pH of 7, and water lower than 7 pH is considered acidic.

www.reference.com/article/ph-water-4926c902f5efe096

The pH of pure water at 25 degrees Celsius is very close to 7. This pH value indicates that water is neutral, meaning that it is neither acidic nor basic. Acids have pH values lower than 7, and bases have pH values higher than 7.

www.reference.com/science/importance-ph-d970f8fc8426bc90

PH is critical to the maintenance of human life and affects everything from the fertility of soils to the health of marine life. All solutions have a pH value.

www.reference.com/article/ph-stand-6a41c154093539c5

The term pH is an abbreviation for "power of hydrogen." The "p" is from the German word "potenz," which means power. The "H" is the periodic table symbol for the element hydrogen.

www.reference.com/article/ph-level-5566ec17be87d5ed

The pH level of a substance describes how acidic or basic it is. Substances with a higher pH level are more basic, while substances with a lower pH level are more acidic. A substance with a pH of 7 is considered neutral, neither acidic nor basic.

www.reference.com/science/good-ph-level-a0338b9b1d43fcdb

A good pH level depends on the substance in question. Some substances are meant to be more acidic and others more basic, while some substances should be neutral. For instance, stomach acid has a pH of 1, while pancreatic secretions are basic with a pH of 8.1.

www.reference.com/science/ph-alcohol-e5a6c9452a992293

The pH of ethanol (C2H5OH) or pure alcohol is 7.33. This means that ethanol is slightly basic.

www.reference.com/article/ph-measure-553d3eb671f26ea6

The pH of a solution measures the amount of hydrogen ions that are in a solution. The term "pH" literally means "the power of hydrogen." The pH of a substance tells how acidic or basic a substance is.

www.reference.com/article/ph-milk-91d95b3290c732e0

Fresh milk has a pH value that is typically between 6.5 and 6.7, making it slightly acidic. A pH greater than 6.7 indicates that the udders producing the milk are inflamed by pathogens, and milk with a pH lower than 6.5 indicates heavy bacterial action and milk spoilage.

www.reference.com/science/definition-ph-paper-164faa6b870aced6

pH paper, also called litmus paper, is filter paper that is treated with natural water soluble dye from lichens. pH paper is used as an indicator to test the acidity of water-based liquids.