Is saliva acidic or alkaline?

The ph value of saliva is about 6.6~7. 1, which is weakly alkaline. Under normal circumstances, the daily saliva secretion should be 1. ~ 1.5 ml. During normal metabolism, the human body will constantly produce some acidic substances or alkaline substances, so the blood Ph of normal people is between 7.35 and 7.45, so it also belongs to alkaline constitution.