Otros Rotor / Beater Mills




Variable Speed Rotor Mill PULVERISETTE 14 classic line



  • Rapid sample throughput due to high-speed grinding
  • Variable speed settings between 6,000 and 20,000 rpm
  • Simple changing of all grinding parts without tools
  • Residue-free thorough cleaning – fast and easy



    Effective comminution due to highest rotor speed

    The FRITSCH Variable Speed Rotor Mill PULVERISETTE 14 classic line is the ideal mill for fast, effective comminution of soft to medium-hard, brittle and fibrous materials as well as temperature-sensitive samples – proven worldwide for the use in trace analysis.

    Difficult-to-mill samples, or extremely temperature-sensitive samples such as styrenes, polyester, synthetic resins, films, PVC, PP and PE can be embrittled with the addition of liquid nitrogen and afterwards ground in the PULVERISETTE 14 classic line. The motor speed can be varied between 6,000 and 20,000 U/m rpm in increments of one-thousandth - making it possible to adapt the mill to each specific application. An automatic speed compensation feature ensures an ideal adaptation of the grinding to the specific comminution behaviour of the sample. At the same time reduces the fast, effective grinding significantly the thermal strain on the sample.


    Impact and shearing

    Inside the Variable Speed Rotor Mill PULVERISETTE 14 classic line, the sample is comminuted by impact on the ribs of the rotor rotating at a high speed and additionally sheared between the rotor-teeth and between the utilized sieve ring.

    • Rapid sample throughput due to high-speed grinding
    • Max. feed size 10 mm, max. throughput 5 l/h
    • Final fineness d50 < 40 μm, sieve rings 0.08 – 6 mm
    • Ideal for minimal sample quantities < 10 ml
    • Simple, tool-free changing of rotor, collecting vessel, sieve ring and labyrinth seal
    • Simple, contamination-free cleaning and assembly of all grinding parts outside the instrument
    • Heavy-metal and iron-free grinding and sample preparation according to RoHS
    • Comminution of difficult-to-mill and temperature-sensitive samples – also cryogenic
    • Variable speed settings between 6,000 and 20,000 rpm
    • Automatic speed regulation for constant milling
    • Efficient cooling of the grinding chamber due to extremely high airflow
    • Highly durable low-wear rotor made of stainless steel
    • Grinding chamber made of stainless steel or PTFE-coated with practical quick-clamping lock
    • Grinding parts made of stainless steel, pure titanium and TiN-coated
    • Maintenance-free three-phase motor with regulated rotor speed 6,000 - 20,000 rpm
    • High speed stability even under full load
    • Wear-free labyrinth seal between the grinding chamber and drive motor
    • Removable dust filter for convenient cleaning
    • Ergonomic operating panel with membrane keyboard and timer
    • Microcontroller with integrated regulation function for Vibratory Feeder
    • Optimal for fine comminution after pre-crushing with the FRITSCH Cutting Mills
    • Temperature gentle fine grinding with the FRITSCH Cyclone separator
    • Extensive accessories available – easing your laboratory tasks

    View extensive accessories


    More powerful frequency converter

    With a more powerful frequency converter, the modified Speed Rotor Mill PULVERISETTE 14 classic line ensures that the motor output is precisely matched to the grinding material.
    Your advantage: faster sample feeding, a constant rotational speed and a higher throughput. The well-designed LED display in the ergonomic operating panel with membrane keyboard, displays the speed and motor load and alerts in the event of reaching the temperature limit and overload.


    Ingenious air routing

    Available only from FRITSCH: The ingenious air routing of the PULVERISETTE 14 classic line ensures a constant airflow to cool the rotor, all motor components and the grinding material in the collecting vessel. At the same time, a large fan blows the cooling air into the instrument through a foam particle filter to create positive pressure that prevents the penetration of dirt particles from the ambient air.


    Fast exchange of all grinding tools - easy cleaning

    All grinding parts can be removed without tools with just a few motions – for quickly exchanging all grinding parts and for cleaning them outside of the instrument. The especially smooth surface of the stainless steel impact rotors simplifies a thorough cleaning – fast and easy! The wear-free labyrinth seal between the grinding chamber and the motor offers secure protection against contamination of the instrument.


    NEW: temperature gentle fine grinding with the FRITSCH Cyclone separators

    The combination of the FRITSCH Variable Speed Rotor Mill PULVERISETTE 14 classic line with the FRITSCH Cyclone separators is ideal for ultra-fine grinding of temperature-sensitive samples like powder coatings and plastic samples or for smooth pre-crushing and fine grinding of hard-brittle to soft, fatty or samples with residual moisture. The powerful air vortex within the FRITSCH Cyclone separators in combination with the efficient air cooling of the mill, cools the sample during grinding and draws the sample directly into the screwed on glass sample bottle. Thereby the fine dust is retained in the Cyclone separators by the ultra-fine HEPA dust filter and prevents the clogging of the sieve ring.

    The result: a particularly fast and efficient grinding with minimized thermal load at a significantly higher throughput – and a particularly simple contamination-free cleaning.
    Two models are available for your application needs: High performance Cyclone separator and standard Cyclone separator.

    Details about the FRITSCH Cyclones


    Configure your Variable Speed Rotor Mill PULVERISETTE 14 classic line exactly to your specific application

    The Centrifugal Mill PULVERISETTE 14 classic line includes a collecting vessel and lid. In order to operate the mill, you must also order a rotor, a sieve ring, an impact bar or a pin insert - allowing you to select your grinding tools according to your specific application! To ensure this, an extensive accessory programme for the PULVERISETTE 14 classic line is available with rotors and sieve rings in various designs and materials, as well as additional accessories. Choose exactly what you need!

    For grinding large quantities we recommend the special conversion kit. This allows the comminution of sample quantities of up to 1 litre in a single step without the need to open the grinding chamber and empty the collecting pan during the process.

    View extensive accessories

    Combine your PULVERISETTE 14 classic line with the FRITSCH Vibratory Feeder LABORETTE 24 to ensure continuous feeding of the sample during the entire grinding process, even of smallest quantities. Due to a direct connection, the mill automatically matches the sample feeding to its load state at any given moment.

    Details FRITSCH Vibratory Feeder LABORETTE 24

  • Applications / Solutions

    • Comminution of Purple Moor-Grass

      Interesting for research are the absolute contents and the ratios of carbon and nitrogen in the plant material. For the determination of these values mostly carbon and nitrogen analyzers are utilized. First, the sample must be ground though.

      read more

    • Sample analysis of maize kernels

      Maize kernels, dressed, prepared as seeds, are subject to testing in regards to possible contents of genetically modified organisms (GMO). The necessity arises to test the seeds for possible properties of genetically modified contents.

      read more

    • Sample preparation of mineral animal feed

      Many various different kinds of animal feed exist which differ in regards to each animal in composition, appearance and analysis. Nevertheless exact guidelines for its contents in regards to minerals, possible additives and unwanted ingredients exist. Essential for each animal feed is though, that the composition has to be inspected.

      read more

    • Salt, Sodium Chloride, Potassium Chloride

      A prerequisite for an efficient salt extraction and processing is the exact knowledge of the mineral compositions of in-situ evaporates, as well as their chemical composition and also of the accruing intermediate and final products during the manufacturing process.

      read more

    • Pigment processing: The isolation of the naturally beautiful

      Mankind has always enjoyed enduring works of art. The particles of the pigments have always been playing a major role. For example, the oldest cave paintings still impress us today. One of the most renowned experts for the production of historical pigments is Dr. Kremer from Aichstetten (Bavaria, Germany). FRITSCH laboratory mills are of great importance in Dr. Kremer's pigment processing.

      read more

    • Comminution of plastic beverage bottles

      While shopping, consumers encounter beverages packaged in plastic (polyethylene terephthalate) bottles. The launching of the new packaging material provision influenced the further purpose of the bottles after their use as packaging. Consumers became aware of this, after the implementation of a deposit and the overall return of all plastic bottles to the stores.

      read more

    • Characterization of polymers

      The analysis of polymers is executed with the aid of gel permeability chromatography. Ideal for the sample preparation is the Variable-Speed Rotor Mill PULVERISETTE 14.

      read more

    • Grinding teas – herbal tea, black tea or green tea

      An efficient sample preparation for fast, reliable and reproducible analyses results is becoming nowadays increasingly more important. Especially in the food industry is an exact sample preparation as a prerequisite for fine analyses essential, in order to meet the given boundary and tolerance values.

      read more

    • Processing cocoa beans in the laboratory

      The most important products which we as consumers come in contact with are cocoa beverages and chocolate. The most important characteristic trait for us is the taste. But before they become chocolate, the cocoa beans have to be roasted, peeled and cracked open.

      read more

    • Sample preparation for refuse derived fuels

      Plastic, wood and shredded waste, are in times of rising crude oil prices very interesting additions to the classic fuels. Especially in the cement industry, the energy rich fractions from conditioning processes are readily burned along. Important here is the analytical evaluation of the materials.

      read more

Nº de pedido
Janine Allkofer
FRITSCH GmbH - Milling and Sizing
Industriestrasse 8
55743 Idar-Oberstein
Teléfono +49 67 84 70 0

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