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Selection of Column (2) (Sodium Polyacrylate)

Calibration curves of Asahipak GF-7M HQ (packed with poly(vinyl alcohol)) and OHpak SB-806M HQ (packed with poly(hydroxy methacrylate)) are compared using a hydrophilic polymer standerd, sodium polyacrylate. The comparison shows that the calibration curve of Asahipak GF-7M HQ is more linear than that of OHpak SB-806M HQ.

Sample : Sodium polyacrylate standard



Columns : Shodex Asahipak GF-7M HQ (7.5mmI.D. x 300mm), OHpak SB-806M HQ (8.0mmI.D. x 300mm)
Eluent : 50mM Na2HPO4 aq./CH3CN=90/10
Flow rate : 0.6mL/min
Detector : Shodex RI
Column temp. : 40°C