![](http://jbindustrial.com/wp-content/uploads/2017/05/Acrison-Model-BDF-Series.jpg)
Acrison Models BDFM, BDF-1 and BDF-1.5 Volumetric Feeders combine two flow-inducing augers/agitator, counter-rotating at the same speed, with a metering auger operating at a proportional, but dissimilar (slower) speed for accurately and reliably feeding a broad variety of dry solid materials, including those considered difficult-to-handle.