Bioreactor Scale-Up Criterion Comparator

Scaling a stirred-tank bioreactor from a 10 L bench vessel to a production-size tank is not one calculation — it is a choice among several competing rules, and the rule you pick determines which process attributes stay faithful to the bench run and which ones silently drift. This simulator renders a bench and a production vessel side by side, each with a rotating Rushton-turbine impeller sized by geometric similarity, and lets you choose whether the scale-up holds power-per-volume, impeller tip speed, oxygen mass-transfer coefficient (k_La) or mixing time constant. Live readouts show the resulting production impeller speed and how far the three quantities you did not anchor deviate from their bench values, while a tracer-dye injection animates each vessel reaching homogeneity at a rate paced by its own computed mixing time — a direct, visual demonstration of why regulatory tech-transfer and lot-comparability protocols exist.