![8324](https://img.petfoodindustry.com/files/base/wattglobalmedia/all/image/2015/02/pfi.8324.png?auto=format%2Ccompress&q=70&w=400)
The PreMax mixer from Charles Ross & Son Company is an ultra-high shear mixer featuring the "Delta" rotor/stator assembly. The Delta rotor/stator generator produces a double vortex that draws batch material from both the top and bottom chambers of the mixer, accelerating dispersion and producing rapid turnover rates, the company says. The mixer runs at a maximum tip speed of 5,000 fpm, handling viscosities up to 50.000 cP, according to Ross. Standard models are available for batches as small as 1-2 gallons and production vessels up to 1,000 gallons or larger.