Do you say "reduce something to polystyrene"? this question may not fit in this forum because it's about English, but biochemistry knowledge is required, so please allow me to make this thread.

When you measure the molecular weight of a polymer, you may use polystyrene standards and say "polystyrene equivalent Mw of --- is..." or "the molecular weight relative to polystyrene (standards) is..."
I have seen these usages in various articles and documents. The other day, however, I ran into an expression, "the Mw was reduced to polystyrene." I understand that it means the same thing, but my question is, do native speakers really say like this? 
I googled "reduced to polystyrene" and got many hits, but it seemed many of them were written by Japanese. And when I did the same thing on Google Books, there was only one hit and the "reduced" meant "converted/changed." 
So my question is, do you say "reduce to polystyrene" in this particular situation, meaning you use polystyrene standards? 

Thank you very much!
Just write what you actually did: You used the calibration curve of your SEC column for polystyrene in solvent xx. Those phrases you cite are meant to sound impressive, but are actually just scientifically wrong, bad English, and therefore stupid. 

Nothing gets reduced here like a reduced temperature or a chemical reduction. Also there is no "PS equivalent Mw", because it depends strongly on the solvent. "Relative" is as wrong, because that implies that there is simply a factor between the two scales, while in fact there are two calibration curves, one of which is unknown.