Reproducible size-reduction and homogenisation within seconds
6 May 2018
The Knife Mill PULVERISETTE 11, from Fritsch is suitable for sample preparation of moist, oily and fatty as well as of dry, soft, medium-hard, hard and fibrous samples for an exact analysis.
The multifunctional, industrial-grade mill is an all-rounder which can be used for sample preparation in the fields of foodstuffs or animal feed testing, pharmaceuticals and chemistry and many other applications.
Safety is ensured via a bayonet lock which cannot come loose, even if the sample material is very hard or the start-up speed is too high. The grinding vessel, lid and knife can be cleaned in the dishwasher and are autoclavable for sterile comminution. The motor speed can be set digitally - in increments of a hundred between 2,000 and 10,000 rpm – making it possible to adapt the mill to the specific comminution behaviour of each sample. An additional turbo function with 14,000 rpm for up to 6 seconds facilitates the grinding of sticky and fibrous samples.
The freely adjustable Vario-Lid system made of plastic PP can be used to reduce the grinding chamber volume down to 0.54 litres and to manually compress and loosen up the sample material at the beginning and at any time during comminution. Users will always achieve a homogeneous sample within a narrow particle size range even for smaller sample quantities and for difficult-to-grind materials.
Users can programme, save and label up to 20 Standard Operating Procedures (SOPs) for easy future retrieval. Each SOP can feature up to 15 grinding sequences, saved via the touchscreen and the multifunctional dial of the control panel. All saved SOPs can be controlled, uploaded and exchanged by laptop via the integrated USB interface.
Samples which are difficult to grind - such as gummi bears, chocolate or plastic toys - can be embrittled with liquid nitrogen for comminution directly in the grinding vessel made of stainless steel 316L. The sample material remains 100% cold. Users need only select the special lid with the easily exchangeable single-use sieve insert for reliable protection against contamination.
Fast comminution, homogenisation and mixing
Extra strong motor power up to 1250 watt
Max. feed size 40 mm, final fineness < 300 μm
Knife blades with up to four cutting edges – up to 56,000 cutting processes per minute
Up to 1,400 ml useful capacity of the grinding vessel plus Vario-Lid system for variable volume
20 SOPs can be saved and USB interface for SOP management