you can also try the following, this is what we use in our lab.
        25 ml of Water
        20 ml of Ammonia
        10 ml of Hydrogen Peroxide (33%)

>>> "Eltek Ltd. - Process Engineering"
<[log in to unmask]> 03/19/98 05:11am >>>
Hi !
What is the composition of solution for microetching  of crosssections to
show the borders between copper layers ?
Edward Szpruch
Eltek Ltd - Israel
Tel  972 3 9395050
Fax 972 3 9309581
E-mail :  [log in to unmask]

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