Tubes and filters for minipurification

Left panel - Left, muslin square (~7"), right top, 3.5" powder funnel, right bottom, polycarbonate tube (1x3.5")

Right panel - Rack with 4 tubes - normally I do 12 samples at a time (3 racks).

Grinding and filtering takes about an hour
Ultracentrifugation (two high speeds) takes a little over an hour and loading the gel takes about 45'.
If I start a set of minipurifications at 2PM, I can normally have them loaded on the gel before I leave at 5:15PM