Answer
Apr 17, 2024 - 02:30 PM
No, you shouldn't need a fume hood unless you're doing your calibrations inside an enclosed closet sized space. The value of HCN coming out of the gas cylinder is low and gas decreases in concentration at a cubed root of the space as it fills the volume. By the time you're released a minute or two worth of gas you've only released a liter or two of gas into the room which then dissipates into the space of the room. However, if you're doing constant calibrations and really dumping gas into the room you may want to consider it.
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