Cross Beater Mill – stainless steel grinding insert Pulverisette 16
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Variable Speed Rotor Mill Pulverisette 14 classic line
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 rpm in increments of one-thousand – 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.
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.
Variable Speed Rotor Mill Pulverisette 14 classic line
Features
- 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 separators
- Extensive accessories available – easing your laboratory tasks
specifications
| Working principle | impact force |
|---|---|
| Optimal for material type | soft, medium-hard, brittle, fibrous and temperature-sensitive samples |
| Grinding tools | impact rotor, sieve rings, pin insert, impact bar |
| Materials of the grinding tools | stainless steel, pure titanium and TiN-coated |
| Max. feed size (depending on the material) | 10 mm |
| Min. sample quantity | < 10 ml |
| Max. throughput (depending on the material and sieve size) | 5 l/h |
| Final fineness (sieve inserts) | 0.08 – 6 mm |
| Feeding | batchwise/continuous |
| Rotor speed | 6,000 – 20,000 rpm |
| Electrical details | 200-240 V/1~, 50-60 Hz, up to 1300 Watt |
| Instrument also available in the following voltage | 100-120 V/1~, 50-60 Hz – order no. 14.5010.00 |
| Emission sound pressure level at the workplace according to DIN EN ISO 3746 (depending on the material to be ground and instrument configuration) | approx. LpAd = 89 dB |
| Weight | 23 kg |
| Dimensions (W x D x H) | bench top instrument 31 x 48 x 47 cm |
Manufacturers
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Variable Speed Rotor Mill PULVERISETTE 14 Classic Line
Industries
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Methods
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Spares and accessories for PULVERISETTE 14 classic line
IMPACT ROTORS MADE OF STAINLESS STEEL
The extremely durable, low-wear, stainless steel rotors are suitable for all standard applications, for comminution of medium-hard, soft, brittle, fibrous substances from lime to plants. To meet various grinding tasks, rotors with 8, 12 and 24 ribs are available
SIEVE RINGS MADE OF STAINLESS STEEL 316L
The extremely durable, low-wear, stainless steel sieve rings of the PULVERISETE 14 classic line are suitable for all standard applications, for comminution of medium-hard, soft, brittle, fibrous substances from lime to plants. To meet various grinding tasks, sieve rings with trapezoidal, square or round perforation from 0.08 mm to 6 mm are available.
ACCESSORIES FOR HEAVY-METAL AND IRON-FREE GRINDING AND SAMPLE PREPARATION ACCORDING TO ROHS
For heavy-metal-free and iron-free grinding and sample preparation according to RoHS, you can order your PULVERISETTE 14 classic line with a PTFE-coated lid and collecting vessel and corresponding impact rotor and sieve ring.
ACCESSORIES FOR DIFFICULT-TO-MILL AND TEMPERATURE-SENSITIVE SAMPLES
The FRITSCH impact bar enables together with a sieve ring a very gentle comminution of the sample which in many cases would be impossible without the impact bar. The bar acts as a stator on which the material is additionally beaten.
Ideal for especially heat-sensitive materials such as powder coatings or plastics as well as for smooth pre-crushing and fine comminution of hard-brittle to soft, fatty or samples with residual moisture. The corresponding rotor and sieve ring for the impact bar must be ordered separately.
ACCESSORIES FOR GRINDING LARGE QUANTITIES
Regardless of the specific configuration of rotor, sieve rings, impact bar or pin insert, you can grind large quantities with the special conversion kit. Consisting of a special collecting vessel with outlet and flange-mount nylon support sack for easily replaceable paper filter bags. 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.
SAMPLE EXHAUSTION WITH 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.
Two models are available: High performance Cyclone separator and small volume Cyclone separator.
ACCESSORIES FOR AUTOMATIC SAMPLE FEEDING
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.
ACCESSORIES FOR GRINDING WITHOUT A SIEVE
For grinding without a sieve for the most difficult, medium-hard, oil- or grease containing materials such as waxes or paraffins, utilize the pin rotor and the corresponding grinding chamber lid with pin insert for grinding entirely without a sieve ring.
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