New fume hoods specifically designed for nanotechnology are being developed primarily based on low-turbulence balance enclosures, which were initially developed for the weighing of pharmaceutical powders; these nanomaterial handling enclosures provide adequate containment at lower face velocities, typically operating at 65–85 fpm.[7] They are useful for weighing operations, which disturb the nanomaterial and increase its aerosolization.[2]:27–28