Users of diffusion pumps for harsh processes or in non-optimized vacuum systems may be seeing crystallization of solids in their pump fluid. This crystallization results from decomposition of fluids due to over exposure to oxygen at high temperatures. This break down alters the viscosity of the pump fluid and may also obstruct flow passages. Further, the build-up of solids and crystals on internal surfaces can lead to inefficient heat transfer which may make operation of the pump unstable.
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