Homebrew PCBs

I just bought this thing:
http://www.conrad.fr/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10001&storeId=10001&productId=221211&langId=-2&parent_category_rn=18948
Not sure if it is pure NaOH, but I guess so. I says to solve it into 1 
liter of water and develop for about 1 minute.*
*
guja wrote:

>7-10 g NaOH in 1 liter! 
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>Ronald Vanschoren <yahoogroups@...> wrote:    .....
>  I developed the PCB in a NaOH solution (1 liter for 35grams NaOH).
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>Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
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>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBs
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>If Files or Photos are running short of space, post them here:
>http://groups.yahoo.com/group/Homebrew_PCBs_Archives/ 
>Yahoo! Groups Links
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