G20
Frame ID: G20
Sample ID: Graphite
Magnification: As given
Illuminator: Vertical
Objective: 10x air
Polarizer: In
Analyzer: In
Retarder Plate: Out
Filter: None
Important Features: Baked graphite anode
Description: This frame shows a typical baked anode with petroleum coke fragments but with an excess of pore space due to lack of pitch. Note how the change in optical conditions enhances the identification of the various phases present.