Method and apparatus for improving sedimentation field flow frac

Details Method and apparatus for improving sedimentation field flow frac Method and apparatus for improving sedimentation field flow frac

1982-02-25

1983-11-08

Hill, Ralph J.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209172, 494 85, B03B 500

Patent

active

044141068

ABSTRACT:
The channel in a sedimentation field flow fractionation apparatus is improved by the use of a heavy liquid layer formed of a water immiscible, chemically inert, nontoxic material. This thin, heavy liquid layer prevents the sample from plating on the outer channel wall thereby permits a less perfect finish to be formed and to some degree corrects lack of circularity of the channel. Where multiple channels are used, the use of this layer reduces leakage between adjacent channels.

REFERENCES:
patent: 1209730 (1916-12-01), Leblanc
patent: 2193734 (1940-03-01), MacCracken
patent: 2528974 (1950-11-01), Ritsch
patent: 2612267 (1952-09-01), Vogel
patent: 3463551 (1969-08-01), Clay
patent: 3523610 (1970-08-01), Purcell et al.
patent: 4285809 (1981-08-01), Dilks et al.

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