PULVERISETTE 7 Planetary Micro Mill
The PULVERISETTE 7 classic line, featuring two working stations, is ideally suited for the rapid, uniform, and ultra-fine grinding of small-volume samples—ranging from hard, medium-hard, and brittle materials to moist substances—down to a colloidal level of fineness. Depending on the desired final fineness, grinding can be performed either dry or in a suspension.
In addition to grinding, this planetary ball mill can be used for mixing and homogenizing emulsions and pastes.
Technical Data
Operating principle: Impact force
Ideally suited for: Hard, medium-hard, brittle, and moist materials
Number of working stations: 2
Grinding tools: Grinding bowls and balls
Grinding tool materials: Agate, sintered corundum, silicon nitride, zirconium oxide, hardened stainless steel, tungsten carbide, polypropylene
Grinding bowl volumes: 12 ml, 45 ml
Grinding ball diameter: 0.1 – 15 mm
Maximum feed size (material-dependent): 5 mm
Sample volume: 0.5 – 40 ml
Final fineness (material-dependent): < 1 µm
Typical grinding time to analytical fineness: 3 min
Grinding process: Dry/wet
Grinding in an inert gas atmosphere: Possible only within a glove box. Gas pressure and temperature measurement: no
Main disk rotational speed: 100 – 800 rpm
Transmission ratio (planetary disk / grinding bowl): i relative = 1 : -2
Effective diameter of the main disk: 140 mm
Centrifugal acceleration (g = 9.81 m/s²): 50 g
Interfaces: yes
Electrical specifications: Voltage 100–120/200–240 V/1~, 50–60 Hz, 740 W; configured according to customer requirements.
Sound pressure level at the workplace in accordance with DIN EN ISO 3746 (depending on the material being ground, the grinding bowls/balls used, and the selected rotational speed): up to approximately LpAd = 96 dB
Weight: 35 kg
Dimensions (W x D x H): Benchtop instrument 37 x 53 x 50 cm
