Greerco Model W-750H-92 Stainless Steel Horizontal Inline Colloid Mill, S/N 10-0321-3526. This Colloid Mill Features A Conical Grooved Rotor And Stator Particularly Suited For Heavy Emulsions. Mounted On Portable Base With Casters And Starter Box. Mill Driven By 20 Hp 3/60/230-460 Volt Explosion Proof Motor.