So we're sitting around at work today, playing with dry ice that we receive as refrigerant for drug shipments and started thinking... When you drop it in water, the gas it emits is CO2. I've read a bit here and there about people using dry ice for various things in brewing. I wonder if you could use it to create a CO2 blanket in fermenters and bottling buckets and to purge bottles when bottling?
You could get a sports bottle with a flexible straw and attach a hose, and direct it into bottles, fermenters or buckets. I wonder if it would make enough of a difference and will it remain in the fermenter bottle or whatever long enough to make it effective. Any thoughts?