Danish to English Tech/Engineering Medical: Pharmaceuticals

In a lab working with virus filtration etc.

Detta trinnet er ikke virusreducerende, men da trinnet kommer efter virusfiltrering, må der ikke anvendes eller medbringes udstyr/utensilier ind i kabinen som har været i rensningshallen.

Is this a cabin within the lab for purification or is it referring to change rooms or what?

Hard time visualizing here.