Study on the acid-base indicator test water from pea flowers. The purpose of the study is to study how to make the test indicator acid-base from pea flower The study consists of a data record The result showed that the When the water level of the lilac acid-base substances test showed that the desired When the fill substance acid down will make water turned purple red. And the base or alkaline substances to make the water turns green.The substance found in flowers and red color blue. , which features can be used as a biological marker. Or in the Losartan K from the litmus test. When the fill substance acid down will make the water turned purple red.