ตัวแปรต้น สัดส่วนปริมาณการผสมสารสกั

The variable portion of the volume of plant extract and 5 species
dependent variable. The ability to check the ph of the acid - base.
A control variable What kind of acid - base, the amount of acid - base to detect.The volume of the extracts tested, the total volume of the extract after mixing,
.

The independent variable, the proportion of mixed extracts from plants, both 5 type
variables The ability to determine the value of acid - base pH
control variable kinds of acid - base, the quantity of acid - base, use checkThe concentration of extracted at the test, The total volume of the extract after mixed,

The variable. In proportion to the quantity of mixing all types of flowering plant extract 5
variables, based on the ability to check the pH value of aqueous solution of acid-base
variables control the types of solution acid-base, quantity of solution acid-base used to monitor,The quantity of the extract tested, the total volume of the extract after mixing,
.