Remixing of separated fractions prevented. Improved isoelectric focusing apparatus helps to prevent electro-osmosis and convection, both of which cause remixing of separated fractions. Fractionating column segmented and rotated about horizontal axis: Only combined effects of both features fully effective in making good separations. Improved apparatus slowly rotated continuously or rocked (at rotational amplitude of at least 180 degrees) about its horizontal axis so average gravitational vector experienced by fluid is zero and convection is therefore suppressed. Electro-osmosis suppressed and convection further suppressed by separating column into disklike compartments along its length with filters. Experiments have shown dimensions of apparatus not critical. Typical compartment and column volumes are 2 and 40 ml, respectively. Rotation speeds lie between 3 and 30 rpm.
Rotating Apparatus for Isoelectric Focusing
NASA Tech Briefs ; 10 , 3
1986-05-01
Miscellaneous
No indication
English
Isoelectric leukocyte focusing
NTRS | 1977
|A Commercial Isoelectric Focusing Apparatus for Use in Microgravity
British Library Conference Proceedings | 2000
|