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thryll, Are you operating at pressures significantly above atmospheric? If not, strength per se is probably not an issue. My first guess would be that thermal stresses are causing your tube to crack. I would suggest taking steps to minimize rates of temperature change in the tube. Be sure to...

SteveBzzz, Yes, the CO2 actually dissolves in the plastic, and over time it diffuses through to the outer surface and is lost. Given enough time, all the CO2 will be lost in this manner. CO2 is lost through plastic bottles more rapidly than through glass because the solubility and diffusivity...

ICP-MS analysis should be able to give you an answer, but you'd probably have to send it out. As for a quick experiment you can do in-house, I don't have any suggestions. Anybody else? I'd be interested to know myself...

You are dealing with relatively low pressures, 3.4 atm, compared to the critical pressure of water, 218 atm. The reduced pressure is therefore 3.4/218 = 0.016. The reduced temperature under these conditions is 412K/647K = 0.64. From the generalized compressibility charts, the compressibility...

I think I have two answers for you... First, with respect to you chocolate milk life question: A lot of chocolate milk is UHT pasteurized and can therefore be stored for long periods of time without going bad. In Europe and Australia (among others perhaps, I have no idea) it's quite common to...

Can anyone recommend a source order-of-magnitude estimates for small-scale pilot / large bench scale (e.g. 10 kg/day) equipment? For example, I'm looking for compressors in the 1 kW range, vessels of several liters, and so on. For that matter, can you name any suppliers for equipment this...