Eudragit and ethyl cellulose - HPLC assay

[bookoon]

Hi Folks

Have any of you worked on HPLC analysis (assay) of Eudragit LD30 (Methacrylic Acid - Ethyl Acrylate Copolymer (1 is to 1) Dispersion 30 per cent) and Ethyl Cellulose?

[unmgvar]

in polymers it is important to know the range of the expected sizes of your compounds.
are they water soluble or organic soluble?

[Gerhard Kratz]

You can do it with a SEC column, based on Polymer matrix, for water soluble compounds. A 50mmol/l acetate buffer pH5,8 I would use. Please google for more applications published on the www. Good luck.