Receive a production situation, make the decisions, and see the likely preservation consequences. There is no quiz score: the aim is to understand why the process behaves as it does.
Plant recipes, approved chemicals, health and safety controls and validated operating procedures always take precedence.
The result will explain the likely outcome, what worked, and what deserves another look.
The simulator uses broad teaching rules. These graphs show the experimental and published evidence behind two of the most important ideas: protection takes time, and drainage continues after the drum stops.
Salt lowers water activity, but protection is not instantaneous. In the cited brining example, whole-hide salt saturation did not approach the ~90% teaching target until after several hours.
Seven woolly lamb skins continued to release liquid for weeks. Almost 400 mL per skin drained in total; about half was released in the first 2–3 days and roughly 75% by day 7.
PRESERVE will generate a deliberately awkward load. Diagnose it using the same controls in the simulator and see whether your changes improve the outcome.
What would you look for immediately after the drum?
What signs might tell you that preservation was incomplete or uneven?
How could an early preservation failure appear much later?
Time, temperature and moisture begin affecting the skin before preservation starts.
Preparation, distribution, penetration and drum conditions determine whether treatment reaches the whole skin.
Drainage, storage and transport remain part of preservation after the drum has stopped.