Jun 18, 2014 · Thirdly, there may be post-forming treatment diffeuding surface treatments (e.g., ammonium sulfate), sterilization, depyrogenation, and added coatings for chemical resistance (e.g., SiO 2 coating) or lubricity (e.g., silicone oil). Finally, it should be noted that by design, the flange end of the PFS has no ...
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