Case #2: Precipitation of pigment component in ink
Pigment in ink cannot be precipitated by conventional (general purpose) centrifuge due to insufficient g force.
Pigment of the red ink can be precipitated with greater g force offered by ultracentrifuge model CS150NX/FNX.
Reference : himac application
Pigment of red ink was precipitated by the ultracentrifugation at 1,050,000xg (140,000rpm) for 12 hours. Ultracentrifugation is effective method to separate and precipitate pigment component in ink.