Talk:Membrane osmometer

File:Pfeffer-Tabelle9.svg

For $M\_n$ below 30,000 grams per mole, the solute permeates through the membrane and the measurements are inaccurate.{{cite book|last1=Chanda|first1=Manas|title=Advanced Polymer Chemistry|date=2000|publisher=Dekker Marcel Inc.}}

Excuse me for being blunt - above statement is complete rubbish -- Wilhelm Pfeffer did measurements with Sucrose which has molar mass of 342.4 grams per Mol. I can only assume that you misinterpreted the context of the reference which - according to the title - probably deals with polymer membranes - not membranes in general. Please correct this gross factual error. Regards, --Burkhard (talk) 19:43, 5 November 2015 (UTC)

Osmometer is a device for measuring osmotic pressure not molecular weight! Of course it can be used for estimation of polymer mw.

Mkotl (talk) 09:46, 11 December 2016 (UTC)

Since we're talking about average molecular weights, $\backslash overline\{M\_n\}$ with a dash over it should be used instead of just $M\_n$.Gosseweening (talk) 19:45, 23 May 2017 (UTC)