food = you can eat it (like the CO2 they add in Coke/Pepsi). very high purity
industry = you can still eat it (but I wouldn't). contains greater level of other contaminant gases and stuff.





food = you can eat it (like the CO2 they add in Coke/Pepsi). very high purity
industry = you can still eat it (but I wouldn't). contains greater level of other contaminant gases and stuff.
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