Calma por favor!
Interesting to see opinions about water drop tests, yeah, and it's plusses and minuses. Now, I have a slow brain and dull eyes and shaky hands, but maybe still someone can tell me why noone says anything about asperity. And viscosity. And work time to maximum wetting. And temperature. And room humidity.And included gas. And bouquet..oh, forget...that was something else. May the gurus say something wise, that I can apply when surfaces are seemingly clean but attachment is still poor. If the DI waterdrop test covers even these, I will change our rules at once and gain lots o money...I suppose the droptest is applicable on many other surfaces than Copper.....//Ingemar

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