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The Production of Ultra-pure Hydrogen124-128

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Figure

Fig. 1 The rear of the pressure frame of an HK 28 arrangement of four difusion modules and the ease of diLffusion unit, showing the compact access for servicing
Fig. 2 the A n  IIK 28 diffusion unit viewed from the front, showing the ergonomic layout of controls on tho pressure frame (left) and on the control console (right)
Fig. 3 helium mass spectrometer. 1 A typical diffusion module being evacuated in preparation for leak testing on the Only modules with leak rates less than 2 ~ 1 0 - " c m ~ / s e c  at x 1fFtorr are passed for installation in I1 and IIK units
Fig. 4 H a n d  Performance testing of HK diffusion units on

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