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PULVERISETTE 23 球磨机

FRITSCH PULVERISETTE 23 球磨机、飞驰、福里茨授权总代理 、飞驰总代理、FRITSCH PULVERISETTE 23总代理。

  • 商品编号:PULVERISETTE 23
  • 货  号:PULVERISETTE 23
  • 品  牌:德国福里茨
  • 计量单位:
  • 型号: PULVERISETTE 23
  • 原产地: 德国
  • 类型: 进口仪器
  • 广东工程师电话: ☎13828815788
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For fine comminution of minimal quantities of dry laboratory samples or solids in suspensions. For mixing and homogenisation of emulsions. Input quantity up to 5 ml.

 

 

Areas of application

Well suited for sample preparation, such as in chemical analysis, chromatography, mass spectrography or x-ray structure analysis. Preparation of samples in genetic research, homogenisation of ingredients, preparation of extracts in forensic analysis, grinding of pigments and precious materials.
The PULVERISETTE 23 is also excellently suited for solubilising of biological samples and for low temperature comminution of frozen or chilled soft samples.

Method of operation

The rotation of a large direct current motor is converted into vertical oscillation movement via a lifting piston gear. Through oscillations of the grinding bowl of large amplitude and high frequency, comminution occurs in the grinding bowls due to the collision between grinding balls and the grinding bowl inner wall as well as through friction between the grinding balls and the grinding bowl inner wall.
In contrast to comparable mills, the ball-shaped grinding bowl inner wall is optimised for the comminution principle and achieves a significantly higher level of efficiency.

Features overview

  • Small grinding bowl volume for minimal sample quantities < 5 ml
  • Small contact surface with grinding tools
  • Quick grinding bowl fastening with tongue and groove clamping system
  • Oscillation amplitude 9 mm
  • Adjustable, reproducible grinding duration and adjustable loading frequency
  • Regulated oscillation frequency (15-50 Hz.)
  • Robust crankshaft drive
  • Integrated glass keypad
  • Maintenance-friendly
  • 2-year warranty

Equipment

The standard equipment delivered with the Mini-Mill PULVERISETTE 23 does not include a grinding bowl or balls. Grinding bowls and balls are offered in 4 different materials so that contamination of the samples through undesired rubbing off from grinding parts can be avoided.








































 

Voltage/connection values: 100-240 V/1~
Frequency: 50-60 Hz
Input Power: 90 W
Operating principle: Impact
Grinding tools: Grinding bowls (5, 10, 15 ml) and grinding balls (0.5 - 15 mm)
Materials of the grinding tools: Zirconium oxide, stainless steel, hardened steel, PTFE,
Grinding bowl oscillations: 900 - 3,000 oscillations/min at 9 mm amplitude
Max. feed size: (depends on material) 6 mm
Min. sample quantity: 1 ml
Max. sample quantity: 5 ml
Final fineness: 5 µm
Dimensions: (W x D x H) Bench top instrument 20 x 30 x 30 cm
Weight: 7 kg

Suitable for the following material samples

medium-hard, brittle, moist
























Accessories
Please note: For this FRITSCH mill, you require a grinding bowl of your choice and the corresponding number of grinding balls. The grinding bowl material must also be harder than the material to be ground. In normal cases, grinding bowls and balls of the same material are used. Please take note of the useful capacity, this is not identical with the bowl volume!
Grinding bowls 15 ml volume
Grinding bowls 10 ml volume
Grinding bowl 5 ml volume
Grinding balls 15 mm diameter for grinding bowl 15 ml, 10 ml
Grinding balls 10 mm diameter for grinding bowl 15 ml, 10 ml, 5 ml
Grinding balls 5 mm diameter for grinding bowl 15 ml, 10 ml, 5 ml
Grinding balls ≤ 3 mm diameter for grinding bowl 15 ml, 10 ml, 5 ml

 

Grinding set selection aid for the PULVERISETTE 23

Material data for the grinding bowls/balls

Material Main component of the material Density g/cm³ Abrasion resistance Used for grinding material
Zirconium oxide ZrO2 5.9 very good Fibrous, abrasive samples
Stainless steel Fe – Cr 7.7 fairly good Medium-hard, brittle samples
Hardened steel Fe – Cr 7.9 good Hard, brittle samples
PTFE CxF2x 2.2 Sufficient Frozen tissue samples

Recommended number of balls per grinding bowl

Grinding bowl/
Useful capacity (sample volume)
15 ml
0.5 – 5 ml
10 ml
0.2 – 1 ml
5 ml
0.01 – 1 ml
Balls diameter      
15 mm 2 1  
10 mm 5 3 1
5 mm 60 30 20

The quantity of grinding balls can be reduced by up to 15%; however, increased wear should be expected in this case. The specified number/mass of balls per bowl is the minimum quantity; depending on the material behaviour, it may be necessary to increase this.

 

Normally, grinding bowls and balls of the same material are used. In principle, the grinding bowl materials must be harder than the material to be ground. Important: Pay attention to the specified useful capacity as this is not identical to the bowl volume!

 

It may also be useful to work here with grinding balls ≤ 3 mm diameter. We have not listed these here because we would like to advise you regarding your application. Please contact Mr. Gerber, email: gerber(at)fritsch.de

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