Chromatography Forum

Posted: **Sat Jan 23, 2016 9:00 pm**

Hi,

For PPG 4000 analysis what calibration curve do you used?Thank's

Posted: **Mon Jan 25, 2016 10:16 am**

You could use PEG. This standard is available in a range from 106 - 40k Da. Use the same eluent as with your samples. As always, it is a relative calibration.

Posted: **Tue Jan 26, 2016 6:18 pm**

Thank's a lot.

Posted: **Tue Feb 02, 2016 11:38 am**

Hi,
What calibration curve do you use for glycerol ethoxylate propoxylate with molecular weight 3500 -4000 Da?

Posted: **Mon Feb 22, 2016 4:24 pm**

Hi,
What calibration curve do you use for glycerol ethoxylate propoxylate with molecular weight 3500 -4000 Da?

If the compound is soluble in Tetrahydrofuran, then I use the Polystyrene curve. If the compound is aqueous soluble, then I use the PEG curve.

Chromatography Forum

GPC

GPC

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GPC

Re: GPC