The dilution factor (DF) refers to the ratio of the volume of the initial (concentrated)solutionto the volume of the final (dilute) solution, that is V1: V2.
A dilution factor can be calculated by dividing the final volume by the initial volume.
DF = V2/ V1
where
Your friend diluted 100 mL of concentrated orange juice with 400 mL water. What is the dilution factor?
DF = V2/ V1
= (100 mL + 400 mL)/ 100 mL
= 5
这意味着你的朋友的s diluted orange juice is 5 times less concentrated than the concentrated one.