Two drops (0.1 mL) of 0.5% ketorolac tromethamine ophthalmic solution, instilled into the eyes of patients 12 hours and 1 hour prior to cataract extraction achieved measurable levels in 8 of 9 patients' eyes (mean ketorolac concentration 95 ng/mL aqueous humor, range 40 to 170 ng/mL).
Restoring the pH of the scalp may help prevent hair loss from dandruff, bacteria or fungus. Every liquid substance on Earth has a pH, or an acid-base, measurement. Very few substances are neutral; most are either acidic, such as vinegar, or basic, such as bleach.
pH of Water. 1  What is pH. 2  Acids and Bases. â Acidic, Basic or Alkaline. 3  Alkalinity and the pH of Water. 4  pH Units of Measurement. 5  Why is pH Important. 6  Factors that Influence the pH of Water. â Carbon Dioxide and pH. â Natural pH Influences. â Manmade pH Influences. 7  Typical pH Levels. 8  Unusual Levels and Consequences. â Alkaline and Acid Lakes.