Field flow fractionation channel
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United States of America Patent
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-
May 1, 1984
Grant Date -
N/A
app pub date -
Nov 30, 1981
filing date -
Nov 30, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A free floating plastic channel for sedimentation field flow fractionation is suspended in a centrifuge rotor filled with a compensating liquid. The channel is constructed of a plastic central hub assembly fitted with a plastic outer ring preferably having a lower density than the hub. The outer ring contains a shallow channel on its radially inner surface and is interference-fitted to the inner ring to insure a liquid tight seal at zero force field. With the liquid totally surrounding the hub-outer ring assembly, stresses on the plastic parts are essentially equalized even under high force fields and leakage from the channel at the hub-ring interface is greatly reduced.
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