Carter Day Fractionating Aspirator

Classify particles based on terminal velocity

The Fractionating Aspirator is an impeller type aspirator that utilizes terminal velocity to separate light materials from heavy materials and partitions them into fractions.


It can upgrade seedlots by separating seeds within same size classes into density gradients. Empty and partially filled seeds can sometimes be removed by fractionating aspirators, an efficient device for specific gravity separations.


The unit provides adjustable, four stage, high pressure air aspiration for complete cleaning and separation.


Contact us for details at




Carter Day Fractionating Aspirator Literature
C-D frac asp_2.pdf
Adobe Acrobat Document 311.8 KB

Carter Day 48" Fractionating Aspirator

Videos of separations done by a Lab Size Fractionating Aspirator

Commodity Traders International

PO Box 6

101 East Main St.

Trilla, IL 62469


Click to visit our online parts store

Sign up for our equipment newsletter.
Contact us by email.
Visit our YouTube page.