[pas]

The sliced wafer is small, but due to the precision and process requirements everything else is big. Chip fabs have a complete chemical plant in them because they need high purity solvents and deposition feedstock.

That older level of cleanliness is still above a typical pharma factory level cleanliness. (Where there's no laminar air flow and no need for bunny suits, but everything is sterile and consumables like containers, pipes, feedstock is unpacked right before. And there are a number of verification (QA) steps before the finished lot leaves the factory. Just like with chips, just in the pharma/chemical case it can be done in bulk if it's in a homogeneous liquid phase.)