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In the article, “CO2 capture starts when O2 reaches 0.6%,” that’s 6 parts per thousand. O2 in the final product is 6 parts per billion, and the bulk CO2 they use measures 20 parts her billion. In terms of removing O2, looks like there’s still a long way to go from capture to packaging. From the...

Reading some articles about brewery scale co2 capture like: CO2 Recovery System Saves Brewers Money, Puts Bubbles into Beer | NASA Spinoff They do mention scrubbing, drying, and/or using desiccants to get any contaminants and moisture out of the final product which seems like a good idea...

“If it is stupid and works, then it isn't stupid.”

Have the bag under a platform that has guides at the corners so the platform rides evenly up and down. Have the platform trigger switches at the min and max height.

Definitely was a question, as I am no materials engineer. Was thinking of an oil of some sort… certainly a can of worms!

I'll bite, this is interesting! How about submerging your bag in a container filled with some sort of fluid? Choose the right bag material and fluid to solve for O2 permeability (any good ideas here?). As the bag inflates, it will displace the fluid, and you can use a float switch or level...

I like that pump!

Thanks. Good to hear. I’ve been looking at the coils across the various vendors. They all seem to be roughly similar for 5-10 gallon sizes, which is comforting.

Hi All, Got my A/C glycol chiller setup and running nicely. Been comparing the different options for cooling my fermenter... I did a little experiment by wrapping my 15 gallon conical with 50ft of 1/2 inch DD 3/8 inch ID vinyl tubing -- Which would probably work just fine for me holding ale...

Sounds like a fun time for the kiddos too!

In the theme of drunkenness, grain mills, and ugly junk… what — if instead of a drill — a person went used bike and pedal power Flintsones style? Would make a nice yard sculpture!

Something like the keg land carbonation tee and caps would work with a 12oz bottle or even one of the old while labs vials, if you have one. Add the biofine to the bottle, and purge with co2. Flood the bottle with your beer, then shoot it back into the fermenter with higher pressure.

Yeah is all seems like 6 of one and half a dozen of another at a homebrew scale. Starts and stops cause wear and tear on the pump, but so will running it all the time. It’s dead simple to just plug in the pump as always on, but definitely not as cool, or fun. I have longer lines that I want to...

Your diagram depicts two switches wired in parallel, which is fine for this application. The pump will get power when one or both of the switches are on. I’m thinking about doing similar. Depending on your needs, you may also want a third switch that triggers on a timer so that there is a...

FYI—Contacted Spike about their arm, customer service replied that it looks good to them and I should have no problems using it.

Thanks, @Bobby_M for the explanation. Makes sense, and good to know its a manufacturing process related issue. Would you see any issues using these in a fermenter? And/or, is there anything I can do treat the sugaring and get them usable? I'd rather not junk them if I don't have to.

Thanks, I probably would not have come up with that on my own. Nice simple solution, at least for now. I am guessing the machine marks and roughness of the tubing are a place to harbor nasties, just like scratches on plastic… the inside should be polished smooth right? I’ll say the marks show...

I'll go ahead and inquire with the sellers and see what they have to say. Any thoughts on actually being able to fix and use these items in my fermenters? I get they may not be of spectacular quality, but they are what I have on-hand, and there is beer to brew.