Method 5:Sonication End-on
Group A: BC008
Before
After
Detail
Before After
Before After
Comments
Shinier, lost red residue around outer and inner ring and dirt removed (see detail).
Group B:BC019
Before
After
Detail
Before After
Before After
Before After
Comments
Red residue completely gone on the ' L' , dirt removed, purple residue removed and scrates increased in size (see detail).
Group C: BC015
Before
After
Detail
Before After
Comments
Red residue completely removed, dirt removed, and scratches worsened slightly (see detail).