This is a test commonly used when trying to identify ... other than glucose (e.g. lactose and mannitol). Because the same pH indicator (phenol red) is also used in these fermentation tubes, the same ...

Add 5 drops of universal indicator to each test-tube and record the pH or use a pH meter to record the pH. Hydrochloric acid has a low pH value (1-2). Ethanoic acid has a higher pH value (3-5).

A pivotal study testing Sensydia's noninvasive device, which may help diagnose pulmonary hypertension, enrolled its first ...