We have a wide range of physical examination methods. The best way to contact us is via our contact form or give us a call if you would like to find out whether we can offer a product that will help you. We are accredited for methods marked with an asterisk *.
Determination of the microhardness of glass surfaces
DIN EN ISO 6507-1 Vickers hardness test
Determination of flexural strength
Analysis according to in-house procedures
DIN EN 1288-1 „Glass in building – Determination of the flexural strength of glass“
Determination of the density of glass granulates or raw materials
IN EN ISO 60 Determination of apparent density of material that can be poured from a specified funnel
Sieving analysis of glass granulates or raw materials
DIN 66165 Teil 1 & 2 Sieving analysis: basics and implementation
DIN ISO 3310-1 Test sieves with metal wire cloth
Loss on ignition*
DIN 51081 “Testing of oxidic raw materials and materials – Determination of change in mass on ignition”
Density (buoyancy method*, floating equilibrium method*, pycnometer method)
Analysis according to in-house methods
ASTM C 693 Testing the density of glass using the buoyancy method
Expansion coefficient* and transformation temperature*
DIN ISO 7991 “Determination of mean linear thermal expansion”
DIN ISO 7884-8 “Glass; Determination of dilatometric transformation temperature”
Littleton-Punkt (Softening Point)*
DIN ISO 7884-6 “Glass; Determination of Softening Point”
Annealing Point and Strain Point (Beam bending)
DIN ISO 7884-1 “Glass – Viscosity and viscometric fixed points –
Part 1: Principles for determining viscosity and viscometric fixed points”
DIN ISO 7884-4 “Glass – Viscosity and viscometric fixed points –
Part 4: Determination of viscosity by beam bending”
DIN ISO 7884-7 “Glass – Viscosity and viscometric fixed points –
Part 7: Determination of annealing and strain point by beam bending”
Working-Point (rotary viscosimeter)
DIN ISO 7884-1 “Glass – Viscosity and viscometric fixed points –
Part 1: Principles for determining viscosity and viscometric fixed points”
DIN ISO 7884-2 “Glass – Viscosity and viscometric fixed points –
Part 2: Determination of viscosity by means of rotation viscometers”
Remark: see also viscometric fixed points respectively viscosity-temperature-curve
Transmission in UV-VIS and IR spectrum (for example: determination of OH-concentration of glasses or the Chromaticity point)
Analysis according to in-house method
DIN EN 410 „Glass in building – Determination of photometric and radiometric parameters of glazing“
DIN EN ISO 11664 Part 1 bis 6 Colorimetry
Eu.Ph. 11.0, Cap. 3.2.1*
JP 18, Cap 7.01*
Determination of Refraction index of compact samples and granulates
Analysis according to in-house method
Determination of bubble- and caverns’ contents*
We are one of the few independent laboratories having the ability to perform mass spectrometric analysis of bubbles and investigation of caverns’ contents. In this context we can state the qualitative and quantitative composition of gas and deliver important hints concerning the bubbles’ origin.