Compact feed pellet durability tester

A pellet durability tester comprising:

• a tester housing having an upper edge;
• a hopper in said tester housing, said hopper having a bottom portion, a top portion and an interior;
• a lid to said hopper;
• side walls to the hopper;
• means defining perforations on at least a portion of said side walls for allowing fines to pass out of the hopper;
• a nozzle opening into said hopper in said bottom portion thereof and oriented to point towards the internal portion of the hopper;
• and
• means generating a flow of air to said nozzle for discharge therefrom into said hopper;
• said lid being movable between a first lid position, above the top portion of the hopper and a second lid position where the lid is clear of the top portion of the hoppers and
• hinge means having a hinge axis, said hinge means hingedly securing the hopper to the housing and permitting rotation of the hopper about said hinge axis through 180.degree. between a first position in which the hopper is substantially contained within the tester housing and a second position in which the hopper is removed from said interior of the tester housing and is inverted.