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  1. ellen1

    Surface Finish of WFI Systems

    Can anyone tell me the latest industry trend in what is acceptable as far as RA, MP and/or EP for wetted distillate surfaces in a WFI still, holding tank and distribution piping? Thanks, Ellen
  2. ellen1

    ZDT, ZDL Valve P&ID Symbols

    What we have done is to use the diaphragm valve symbol and show it tight against the pipe, i.e., no connections.
  3. ellen1

    Engineering Documentation

    Hello, I am in the pharmaceutical industry and we are trying to decide how to setup our engineering documentation system(drawings mainly). Currently there is a quality assurance documentation department that maintains control over all standard operating procedures and specifications. When I say...

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