As pointed-out above, the downside of telling your supplier how to perform a process can create problems: * It sets the cost of the operation ... I did what you told me to do * Materials selected may be incompatible ... I did what you told me to do * It may have unintended consequences ... I did what you told me to do * It may not work ... I did what you told me to do * It may be in conflict with other operations ... I did what you told me to do ... and on and on. This is why the US Military moved away from all those MIL-specs.
As an alternative, tell your supplier what you want, not what you want them to do. Consider defining the end result that you'd like in-order for your product to perform properly in its end-use environment. Such a definition might read like one of these: * Ionic materials less than xx �gm/in^2 of NaCl measured according to yyyy * Bromide less than xx ugm/in^2, Chloride less than xx ugm/in^2, Sulfates less than xx ugm/in^2 measured according to yyyy * per Telcordia GR-78-CORE, Generic Requirements for the Physical Design and Manufacture of Telecommunications Products and Equipment, latest issue * Nice and shiney, no sticky or tacky residues, ionic materials less than xx �gm/in^2 of NaCl measured according to yyyy
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