Fizzy water without an explosion
September 3, 2012 6:06 PM Subscribe
Are there safety data available regarding the maximum internal pressure of a 2-Liter PET bottle at standard temperature and pressure?
posted by surfgator to Food & Drink (7 answers total) 1 user marked this as a favorite
I like to make my own carbonated water with a CO2 tank and a 2-liter bottle. I would safely like to make it VERY carbonated. I have a pressure regulator that is set at 40 psi and use the bottles 10-12 times before throwing them away. I use cold water and shake the bottle for 1-2 minutes while attached to the CO2 tank. It works pretty well, but the water tends to go flat by the time I get down to the dregs. I would like to know how high I can set the pressure regulator and still feel comfortable with this operation. An initial internet search says 60-80 psi, but I would like to know if there is an industry standard as well. I am solely responsible for the results of your advice.