pH (Acidity -to- Alkalinity) What is the definition of pH?
pH is the negative logarithm of the effectiveness the hydrogen ion concentration or hydrogen ion activity in gram equivalents per liter, used in expressing both acidity and alkalinity on a scale whose values run from 0 to 14, with 7 representing neutrality, numbers less than 7 increasing the acidity and numbers greater than 7 increasing the alkalinity. The pH scale is logarithmic. Each scale unit equals a power of 10. Consequently, a product that has a rating of 13 is 10,000 times more alkaline/caustic than one with a rating of 9. Simple Green All-Purpose Cleaner has a mild pH of 9.3 to 9.5. Go to our pH Scale to see how this compares to other substances and household cleaners, and to get a visual understanding of the pH scale. pH is an important factor to consider when choosing or recommending cleaners or degreasers. Cleaners at both ends of the scale (14 & 0) can be effective cleaners, however they are more likely to be environmentally hazardous or present serious health hazards. The
