Fritsch Milling and Sizing

PULVERISETTE 23

Mini-Mill


Working principle impact force
Optimal for material type medium-hard, brittle, moist
Grinding tools grinding bowls and grinding balls
Materials of the grinding tools zirconium oxide, hardened stainless steel, PTFE
Grinding bowl sizes 5, 10, 15 ml
Grinding ball diameter 0.1 – 15 mm
Max. feed size (depends on material) 6 mm
Min. sample quantity 0.1 ml
Max. sample quantity 5 ml
Final fineness (depends on material) 5 µm
Grinding time (depends on material) 2 min
Grinding process dry / wet
Cryogenic grinding liquid nitrogen can be used for pre-cooling in the PTFE bowl
Grinding bowl oscillations per minute 900 – 3,000 at 9 mm amplitude
Electrical details 100-240 V/1~, 50-60 Hz, 20 Watt
Emission sound pressure level at the workplace according to DIN EN ISO 3746 (depending on the material to be ground and grinding bowl/balls used) approx. LpAd = 75 dB
Weight 7 kg
Dimensions (W x D x H) bench top instrument 20 x 30 x 30 cm


Recommended number of balls per grinding bowl
Grinding bowl/ Useful capacity (grinding material) 15 ml
0.5 – 5 ml
10 ml
0.2 – 1 ml
5 ml
0.1 – 1 ml
Balls diameter
15mm 2 1
10mm 5 3 1
5mm 60 30 20


Elemental Analysis

General specifications
Material hardened stainless steel – 1.4125
ISO/EN/DIN code X105CrMo17
Chemical composition
Element Share %
Iron – Fe 81.4
Chronium – Cr 17
Carbon – C 1.1
Molybdenum – Mo 0.5
Physical and mechanical properties
Density 7.7 kg/dm³
Hardness ~ 60 HRC

Elemental Analysis

General specifications
Material Zirconium oxide – ZrO₂
Chemical composition
Element Share %
Zirconium oxide – ZrO₂ 94.2 – 95.2
Hafnium oxide – HfO₂ 1 – 2
Magenesium oxide – MgO 3.5
Silicon dioxide – SiO2 0.1
Aluminum oxide – Al₂O₃ 0.1
Other 0.1
Physical and mechanical Properties
Density 5.7 g/cm³
Hardness Vickers 1200 (HV10)

Elemental Analysis

General specifications
Material PTFE
CAS number 9002-84-0
Chemical composition
Element Formula
Polytetrafluoroethylene C₂F₄
Melting Point 327 °C
Max. application temp. constant 260 °C
Max. application temp. briefly 300 °C
Physical and mechanical Properties
Density 2.16 g/cm³
Ball Pressure Hardness ISO 868, ISO 2039-2, D 55 Shore

USA Headquarters
FRITSCH Milling and Sizing, Inc.

57 Grant Drive, Suite G
Pittsboro, NC, 27312

Phone: + 1 919 229 0599
Email: info@fritsch-us.com

INSTRUMENT SUPPORT SERVICE

Our technical service team is at your disposal for maintenance, repair, calibration of laboratory instruments and ordering original spare parts. We are also available worldwide for warranty extensions and all other questions. Would you like to send your instrument for testing or maintenance to us? Please visit the Service Form page and complete the form for your submission. US Service Technician Reggie Piard 919-229-0599 x111