Unfiltered particle Survived to clean room Airlock · HEPA · UV-C/VHP
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Sample-Return Biocontainment Barrier Simulator

Extraterrestrial samples — asteroid, comet or Mars return material — must pass through a chain of independent containment barriers before anything can be released into a normal lab. This simulator renders that chain as a real duct in 3D: microbial-scale particles stream continuously from a "contaminated intake" chamber through an airlock purge, a bank of HEPA filter stages, and a UV-C / VHP sterilization zone before reaching a clean curation room. Each barrier's real removal efficiency is computed from its own physical model — mechanical purge cycles, compounding HEPA log-reduction, first-order UV dose-response kinetics, and a chemical-sterilant bonus — and every particle is rolled against those odds independently, so the live "observed breach rate" is a genuine Monte-Carlo estimate that converges on the analytically predicted escape probability as you watch. Tune any control and the barrier odds, the readouts, and the stream of particles all respond immediately.