I theory yes,
In practice nobody makes contaminated industrial CO² since the 1950s.
If there are contaminant the gas supply will be VERY upfront about it.
Usually it’s over 99.99% pure, very low moisture
There’s also usually very few commercial sources of industrial gases in any particular town, so it’s usually not difficult to source it.
If you want to pay extra, then find “food grade gas”, it’s probably the exact same gas because the industrial gas is already so pure it meets food grade quality. Probably the only difference is the fitting is kept “food clean”
My gas guy gets it from “air liquide”, it’s a welding shop
And when you look at the product’s safety datasheet
It even already lists it as “food grade”
They even list it as “100%” pure but of course, nothing is 100% pure.
I theory yes, In practice nobody makes contaminated industrial CO² since the 1950s. If there are contaminant the gas supply will be VERY upfront about it. Usually it’s over 99.99% pure, very low moisture There’s also usually very few commercial sources of industrial gases in any particular town, so it’s usually not difficult to source it.
If you want to pay extra, then find “food grade gas”, it’s probably the exact same gas because the industrial gas is already so pure it meets food grade quality. Probably the only difference is the fitting is kept “food clean”
My gas guy gets it from “air liquide”, it’s a welding shop
And when you look at the product’s safety datasheet
It even already lists it as “food grade” They even list it as “100%” pure but of course, nothing is 100% pure.