PARTS: As a user I want atmosphere control

[sparklestheunicorn]

This most likely means:

• A positive pressure system delivering gas (probably N2) through a tube, possibly from a balloon.
• An air-tight-ish reaction chamber with an exhaust tube. Ideally, this will mean sealing the stirring mount, the manifold core, and the reaction chamber itself.
• Bubbler at the other end to prevent reverse flow and slow balloon deflation