Specific Process Knowledge/Etch/KOH Etch/ProcessInfo: Difference between revisions
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So for a 10wt% solution you will need 133 g pills for each liter of water. | So for a 10wt% solution you will need 133 g pills for each liter of water. | ||
If you use the 50wt% premade solution you can calculate the amount of solution X you need to add 1 liter of water to achieve a concentration of Y wt% by: | If you use the 50wt% premade KOH solution you can calculate the amount of solution X you need to add 1 liter of water to achieve a concentration of Y wt% by: | ||
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where 1.509 g/ml is the density of a 50wt% solution KOH at 20 °C. | where 1.509 g/ml is the density of a 50wt% solution KOH at 20 °C. | ||
So for a 10 wt% solution you will need 165 ml of KOH to 1 l of water. | So for a 10 wt% solution you will need 165 ml of KOH (50wt%) to 1 l of water. | ||
== Backside protection == | == Backside protection == | ||