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The Z400 adventure
https://ytec3d.com/forum/viewtopic.php?t=5638
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Re: The Z400 adventure
Posted:
Fri Jun 14, 2019 7:44 am
by
maxt
the percentage of tween 20 is around 0.2% - 0.3% of the water/alcohol volume. Something like 10 to 15 drops every half a liter