HPLC Analysis of PEG on Two Zenix® SEC-300 Columns in Tandem

HPLC Analysis of PEG on Two Zenix® SEC-300 Columns in Tandem


column Zenix SEC-300 (2 ea), 30 cm x 7.8 mm I.D., 3 µm partcles, 300 Ã…, connected in tandem (Z777033)
column temp. 25 °C
mobile phase 150 mM Sodium Phosphate Buffer pH=7.0
flow rate 0.5 mL/min
sample 1.PEG 81,400 Da (2mg/mL)2.PEG 50,630 Da (2mg/mL)3.PEG 40,000 Da (2mg/mL)4.PEG 26,100 Da (2mg/mL)5.PEG 8,730 Da (2mg/mL)
injection 10 µL
detector Refractive Index at 30 °C


Categories Analytical Chromatography, Proteins
Featured Industry Life Science and Biopharma
General description Pegylation of biotherapeutic drugs improves solubility, increases half life in the blood stream and reduces immunogenicity. Size exclusion chromatography (SEC) is often applied to characterize protein–polyethylene glycol (PEG) conjugates and establish the number of attached PEG chains, since SEC is a precise and robust technique that combines ease of set up and strainghtforward method develpopment.
This chromatogram shows the separation of four polyethyleneglycol polymers varying in molecular mass 8730 to 81,400 Da on two Zenix® SEC-300 Columns in series.
Legal Information Zenix is a registered trademark of Sepax Technologies
suitability application for HPLC


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