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Subject: etching solutions

From: "N2CUA" <n2cua@...>
Date: 2013-05-06

Is there any issues with mixing etching solutions

From 30% HCL / 30% H2O2 to the right concentrations/ ratios

And mix together and store that way ?

Or is there an issue with it becoming weaker just sitting around ..



Randy - N2CUA



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