GTA V - how long does a full set of supplies last?

In GTA I have a cocaine lockup with no upgrades if I bought supplies and they were full how long would it take for the supplies to run out and need resupplying


When staff is assigned solely to production the supplies are used at these rates:

No upgrades - 1 unit every 60 seconds.

Partially Upgraded - 1 unit every ~72 seconds.

Fully Upgraded - 1 unit every 84 seconds.

No upgrades the bar will deplete every 100 minutes. ( 1hr 40minutes)

Fully upgraded the bar will deplete every 140 minutes. (2hr 20 minutes)

Full Guide can be found here.