three threads here:
acetic acid + sodium chloride =
hydrochloric acid + sodium acetate.
There will be small amounts of hydrochloric acid in he
mix to dissolve copper oxides. Hence the cleaning
Second, my sight tube is right angle tube with
compression fitting on one end and tank flange on the
other. Flange thru boiler, sturdy glass tube thru
Third, the explosion risk involved in boiling to
"dryness" is as much caused by reaching the flash
point of the flamable liquid as any other factor.
Also, a gaseous mix of air and fuel, with no boiling
liquid to keep the inside pressure higher than the
outside is just asking for a flame to shoot down the
column and hence ignite your own fuel-air weapon.
I would ALWAYS want to know how much liquid is in my
boiler, particularly a still where I'm boiling "fuel".
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