How long does mastering take?

How long does mastering take?

Stereo Mastering: Approximately 40 mins for each track to be mastered with an additional 30 minutes to insert ISRC codes, sequence your tracks and prepare your master discs.

Separation / Stem Mastering: Approximately 60 mins for each track to be mastered with an additional 30 minutes to insert ISRC codes, sequence your tracks and prepare your master discs.