Analyses of physical properties; analytical methods
Moisture following DIN 51078
Plus mesh following DIN 66165-1 and -2
Test sieving following DIN 66165, part 1 and 2, 5, wet and dry
Particle Size Distribution 0,04 - 400 µm by laser granulometer CILAS1064, following testing station instruction 15, in water, alcohol or other dispersing agents

Particle Size Distribution 0,1- 200 µm by SediGraph 5100, following DIN EN 725-5
  • true density by Helium-Pycnometer (Accupyc)
  • plus mesh
  • particle size distribution including decomposition by ultrasonic or shaking 0,1 – 200 µm
  • analysis of persistent sedimentable materials
Bulk Density following DIN EN 1097-3

True Density 
  • by pycnometer, following DIN EN 993-2 A1
  • by Helium-pycnometer (Accupyc), following testing station instruction 86
Linear Shrinkage following operating instruction 8965
Apparent Specific Gravity of unfired moldings or parts of them following operating instruction 88
Firing and Total Shrinkage following operating instruction 8965
Loss of Ignition following DIN 51081
Deformation due to firing process following operating instruction 18889

Verbal Assessment of fired samples e.g. firing color, smelt outs, property of surface
Bending Strength after firing following DIN EN 993-6
Impact Bending Strength following operation instruction 20471
Compression Strength following DIN EN 993-5 incl. sample preparation by sawing and core boring  (max. 520 X 320 X 320 mm³)
Water Absorption following DIN EN 993-1 resp. DIN EN ISO 10545-3
  • boiling method
  • vacuum method
  • impregnation method
Apparent Bulk Density of fired samples following DIN EN 993-1
Open Porosity following DIN EN 993-1, completion to water absorption and apparent bulk density

Specific Surface Area of solids following DIN 66132, BET following DIN EN ISO 18757 (old: DIN EN 725-6) by AREA-meter II (Co. Ströhlein Instruments) following HAUL and DÜMBGEN, range 0,1 - 1000 m²/g

Pore Size Distribution by the high pressure mercury porosimeter Pascal 140 and 440 series (Thermo Fisher Scientific S.p.A.) following testing station instruction 76 (DIN 66133)
  • micro pores      15 µm - ca. 4 nm
  • macro pores   116 µm - ca. 4 µm
  • complete measure including sample preparation and determining apparent bulk density
Review of the Wetting Ability of low viscose media on solid surfaces by determination of the Contact Angle at room temperature; stereo microscope Stemi 2000 (Co. Carl Zeiss)
Measurement of the Geometrical Properties following DIN EN 1024 resp. DIN EN ISO 10545-2

Contact: M.Sc. Klaus Hantzsch

Phone: +49 3521 463512

Contact: Tom Scholz

Phone: +49 3521 463527