"Millions of pressurized bottles are used in soda
fountains worldwide, and you don't hear about many problems with those either."


Thats partially because when these things tank dump....the soda just tasts bad..it
doesnt kill you....

Dave Millman wrote:

Harry Muscle wrote:

I've been playing around (in my head) with the whole idea of using DIY CO2
instead of presurized CO2 (cause of the cost and safety).

If I understand your idea, you believe that DIY CO2 suffers from control
problems, and you are proposing to store CO2 in a 4L "box", or soda bottle to
solve that problem. I'm not sure that DIY CO2 actually has control problems. I
think the issue is variable output over time, based on recipe, age of mix,
ambient temperature, and other variables.

Consider this: if you use two DIY bottles, connect them with a T fitting and
alternate renewing them, you will have a much more even output (change the mix
of bottle A on day 0, bottle B on day 7, bottle A on day 14, etc.). Next, if you
adjust your surface agitation, you can keep your CO2 concentration to within 3-5
ppm pretty consistently.

BTW, you mention safety problems of pressurized CO2. I've heard many more
stories about DIY exploding or dumping into tanks than I have of pressurized
bottles causing problems. Millions of pressurized bottles are used in soda
fountains worldwide, and you don't hear about many problems with those either.