Marvin

Unless you have a clue as to what the contaminant is, it may be quite difficult to
actually measure. A practical detection test would be to coat a sample with a lacquer
using a similar resin base to your adhesive and put it in the steam zone of a pressure
cooker for a few hours. If it vesicates, then you have problems. This way, you can
determine which cleaning method removes the contaminant best. If it is a silicone, you
may find there is little which will be sure of 100% removal.

Brian

"marvin v. picardal" wrote:

> Dear Techneters,
>
> I would like to ask some help as to how to detect contamination
> on metal surface and how to detect what kind of contamination that is.
> The said contamination results to poor adhesion between the glue and
> the metal surface.
>
> Thank you very much.  Hope you would take time in helping me out with this.
>
> Marvin
>
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