" The PGB provides two levels of containment; the first level being the enclosure itself (box, gloves, filter), the second level is realized through a negative pressure of 4 mbar inside the box." -- This is not ground breaking science.
The box isn't the science, it's a box for doing science in and a portable one was useful as their other glovebox is fixed to the wall. You might as well complain about research institutions for being made out of bricks.
