Gisela Bieg, Microscopic Investigations
Qualified petrographic analyses are offered:
- seam coal
- steam coal
- coking coal
- barbecue charcoal and barbecue charcoal briquettes
Basis of the standardised microscopic analyses are polished particulate blocks from samples of coal or coal blends.
A polished particulate block of crushed coal is investigated in white light and blue light (fluorescence) using a polarizing reflected light microscope.
My company regulary participates in round robin tests and international accreditation programs for quality control.