Marc -
It really is a function of the amount of time and volume of etchants you plan to use.
If using small surface-area (<1cm^2) samples in beakers <500mL once or twice a day,
then you can easily use:
ACI Plus! Carbon Filter
~$160@
FUME-BOX Series Ductless Fume Hood,
Configurable as Horizontal or
Vertical Flow Version, 115V 60Hz
~$1400 from https ductless DOT com from "Air Science"
Also, they sell direct and have many distributers.
However, if you plan to continuously etch daily and go with
a ducted fumehood, then I have witnessed ducted installations
upwards of $100K once EHS, architects, purchase agents, and
HVAC contractors get involved.
Save yourself a headache, and get an acid vapor detector from
Forensics (~$500-$1000).
regards,
- Jim
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James Quinn
Dir. of Laboratories
Stony Brook University
Stony Brook NY
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