Dear colleges. Occasionaly we open a number of chromatograms at the same time, the reason for this being quite obvious: comparison of chromatograms. Of course baseline or retention sometimes deviates and needs to be corrected before we try to do quick evaluation. For multiple chromatograms, it is us...

Dear fellow scientiscs. It is in our interest to calculate polydispersity accurately and yet we have experienced a problem that might be of significan importance to us. In the first step we obtain a peak (in our case a PS standard of narrow molar mass distribution) for which we calculate Mw and Mn. ...