2 Inert gas technology
Components
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
Page
2 - 5
Example:
The following figure shows the permeability of the polymer membranes butyl, hypalon
and neoprene to gas at room temperature in a relative view between the materials.
K. Koch, Calculation of Oxygen permeation through polymer materials, 2011
Particle filter HEPA
A HEPA filter in the gas outlet protects the gas purifier against contamination from pro-
cesses that take place inside the glovebox. In the gas inlet, a HEPA filter traps particles in
the inlet gas before it flows into the glovebox.
Technical data
The standard filter is a HEPA class 13 filter according to DIN EN 1822. It has an integral
particle retention ratio of 99.95% (determined for the most penetrating particle size,
MPPS, which is 0.3µm).
Filter types with higher efficiency are available (e.g. HEPA 14 classification – filtering of
99.995% of the particles).
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