Dow Corning 702 Diffusion Pump Fluid A clear, mixed phenylmethyl dimethyl cyclosiloxane fluid designed for fast pumping of large volumes of gas down from 10-5. Dow Corning 705 Diffusion Pump Fluid A colorless, penta phenyltrisiloxane, single-component fluid designed for ultrahigh vacuums of 10-10 torr (untrapped)
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