Variable speed motor drill

The Pulverisette 14 is an all-purpose mill for rapid crushing of medium-hard (e.g. drugs, dragees, tablets) to soft substances (e.g. plants, roots, leaves, needles, spices, chemicals, foodstuffs). It can also be used to disperse and homogenise dry samples.

Grinding temperature-sensitive materials is also possible with the variable speed rotor mill. The extremely high rotor speed enables fast and effective grinding, drastically reducing thermal stress on the grinding material.

Hard-to-grind samples can be ground to analytical fineness by embrittlement, such as the addition of liquid nitrogen before grinding. In some circumstances, the high efficiency of the mill means that such samples can be ground even without prior embrittlement.

The Pulverisette 14 can be fitted with a pin insert to grind medium-hard samples and materials containing oil or grease without a sieve. By inserting an impact rotor with impact blades in the sieve ring, hard to medium-hard samples can be crushed easily through the increased shearing effect.

With a feed particle size of <10mm, a final fineness of up to 40µm can be achieved. The throughput depends on the material and lies between 0.05 and 5kg per hour.