Hi guys,
While learning some new collocations today I found an example that I just couldn't get the whole meaning of the sentence. (Even though I did google a lot T__T)
This is the example for the collocation "broad range" that contains words which I'm so confused about:
E.g: "The color produced from this reaction is stable and increases in a PROPORTIONAL FASHION over a broad range of increasing protein concentration".
Could anybody please help me explaining what "proportional fashion" here means?
B

