Rotary pump Duo 65 and Root pump Okta 250 working in combination.
Both are volumetric pumps,
working in viscous or intermediate gas flow regimes.
Their pumpimg speed is being measured in cubic meters per hour.
Duo 65: maximum pumping speed: 62 cbm/hr
Okta 250: maximum pumping speed: 270 cbm/hr




Turbomolecular pump HiPace 300.
This pump is working in a molecular gas flow regime.
Its pumping speed is being measured in liters per second.
It must be noted however that the pumping speed varies according to the type of gas.