Originally Posted by nbrack
please excuse my ignorance, but is this for filling with beer from a keg?
Yes, you put the carb'd beer in the sanitized bottle straight from the keg. BUT, you are able to purge and pressurize the bottle first. Filling under pressure almost eliminates any CO2 loss. So, you get real close to your original CO2 volume in a bottle that was filled from a keg.