P7 Micro mill


Premium Line 7 Planetary Micro Mill









Advantages of the Fritsch P7 Premium Line planetary micro mill

  • Milling speeds of 100 to 1,100rpm.
  • Revolutionary acceleration of 95 times the force of gravity
  • Shorter milling times, with a final fineness levels down to the nano range.
  • The grinding bowl and lid form a single unit, so there is no need for additional tensioning, eliminating incorrect operation.
  • A choice of seven materials is available to be used for the milling set.
  • Three different grinding bowls sizes (20ml, 45ml and 80ml) are available.

 Design characteristics of the Fritsch P7 Premium Line planetary micro mill

  • Grinding bowls sunk into the disk, enabling milling speeds of upto 1,100rpm to safely achieved and maintained.
  • Touch screen menu.
  • Automatic parameter self check (performed before every grind) to ensure reproducibility.
  • The grinding chamber of the P7 opens and closes automatically and independently rotates the grinding bowl mountings

The instrument has the following built-in safety checks:

  1. SelfLOCK – an automatic check of the locks in the mill, which blocks any impermissible operating states, with automatic shut off, if any imbalance occurs.
  2. The SelfLOCK mechanism restricts the grinding speeds at which the larger grinding balls can be used for milling.
  3. Various sensors inspect the position of each of the grinding bowls, prior to milling, before the closing mechanism shuts – these same sensors will also determine if the grinding bowls are present.
  4. Process reliability is defined – the instrument automatically detects the inserted grinding bowls (via a RFID chip), to optimise the rotation speed and prevent impermissible grind settings.

When wet milling use a ratio of approximately 1 part solids to 3 parts liquid. Seal the milling bowls with tape (twice round the outside) and release any pressure build up, by piercing the tape with a pin.

The best way to clean the milling set after each sample (to avoid cross contamination between samples) to mill (wet or dry) for a few minutes with sand. After such time, the milling set, should be rinsed under the tap and any residual material (if it is not required) flushed away.

ALWAYS place the grinding balls in the grinding bowl before the material; this will give better grinding results.

NEVER run the ball mill with the milling balls without sample material; this will damage both the grinding bowl and the milling balls.