Gastric juice is an acid juice (pH 1 – 3). HCl (Hydrochloric Acid) keeps the stomach pH acidic. As HCl is a strong acid, it will kill most of the bacteria present in the food. The other main function is to convert pepsinogen into pepsin.Click to see full answer. Likewise, is gastric acid strong or weak?0 is the most acidic, 7 is neutral, and 14 is the least acidic. The pH of stomach acid usually ranges from 1 to 3. At its strongest, the pH of stomach acid just below that of battery acid! That’s why it’s able to eat through the food in your stomach pretty quickly.Subsequently, question is, why is gastric juice acidic? The presence of hydrochloric acid creates an acidic environment within the stomach that is needed to convert pepsinogen to pepsin. Mucus that is produced by the epithelial cells of the stomach help protect the lining of the stomach from the corrosive hydrochloric acid and pepsin. Besides, how strong is gastric acid? The highest concentration that gastric acid reaches in the stomach is 160 mM in the canaliculi. This is about 3 million times that of arterial blood, but almost exactly isotonic with other bodily fluids. The lowest pH of the secreted acid is 0.8, but the acid is diluted in the stomach lumen to a pH between 1 and 3.How dangerous is stomach acid?Stomach acid is also responsible for killing harmful bacteria from foods and neutralizing enzymes. Low gastric acid can leave the body vulnerable to a number of diseases and health complications. Inadequate stomach acid levels have been associated with a number of health conditions, including: upset stomach.