Top Answer. To initiate a return of an unused item, please contact Customer Service via the Contact Us Form on our home page. Thermos bottles seal air tight, and carbonated drinks contain a lot of CO2 gas in solution. However, don't put carbonated beverages in a glass lined thermos as they can break. Do not use on stove for cooking Allow hot liquids to cool to a drinkable temperature prior to sealing lid. NOTE: Due to the impact of COVID-19 and increased order volumes, shipping might be delayed. SOLVED. Well it turns out there's actually a few reasonable concerns people have about putting soda in their thermos:eval(ez_write_tag([[300,250],'thecoolerbox_com-medrectangle-4','ezslot_9',145,'0','0'])); Soda contains dissolved carbon dioxide which is what creates its fizziness. Soda usually has a PH level ranging for 2.38-3.70. You're welcome. If you can put soda in a thermos will it keep it fizzy or will the soda lose all of its carbonation? I am yet to see one complaint about metallic tasting soda in a Thermos or any other stainless steel tumbler or bottle. I couldn't find an answer from Thermos themselves so I did a fair amount of research into what can happen with soda and stainless steel as well as what things other brands are saying about soda in their vacuum insulated cups and bottles. Removal of oxidized stains and even “surface rust” can be done by using a paste made from baking soda and water or a cleanser that contains oxalic acid, such as Bar Keeper's Friend Soft Cleanser. So I wanted to look at what they said and see whether or not they thought it was OK to put soda in their bottles. Wiki User Answered . By Lauren Ferranti-Ballem January 26, 2019. I'm personally a fan of energy drinks and while I'm trying to stop drinking them I wanted to know if I could use my thermos to keep them cold all day long.eval(ez_write_tag([[728,90],'thecoolerbox_com-box-3','ezslot_8',144,'0','0'])); It's completely fine to put soda in a Thermos bottle, cup or flask. All ThermoFlask lids are top shelf dishwasher safe. But can you put sparkling water in a thermos? For best results fill your Thermos to the top so there is no air space of the carbon dioxide to escape into. I can imagine there would be lots of people out there using their thermos to keep their soda called on a day-to-day basis. Are used to work in a café and we would soak our stainless steel milk jugs in Coca-Cola overnight to help remove milk stains and buildup. marketing and promotional emails. What about carbonated drinks other than Soda? Do not use in microwave or freezer. Also it's a good idea to be careful when unscrewing the lid of your thermos when you have soda in your cup or bottle. For a deep cleaning, we suggest occasionally removing the silicone o-rings in your bottle lid to clean, and then soaking the lid O-rings with a 50/50 solution of water and vinegar. Our bottles keep liquids cold for up to 24 hours and hot for up to 12. After cleaning, make sure that all parts are completely dry before reassembling. For best results fill your thermos to the top so there is no air space for the carbon dioxide to escape into.eval(ez_write_tag([[300,250],'thecoolerbox_com-large-mobile-banner-2','ezslot_15',138,'0','0'])); TheCoolerBox.com is a participant in the Amazon Services LLC Associates Program, and we get a commission on purchases made through our links. However, you do need to be aware of this as it could potential he cause your thermos lid to get stuck and be difficult to open. Can you put soda in a thermos or will it actually damage your thermos, make your soda taste bad or potentially even leech metals into your drink? Unscrew the spout lid or extend the straw before rinsing or washing. 844-431-1995. Does Jerry Seinfeld have Parkinson's disease? Thermoses will keep your carbonated drinks cold and given that they are airtight they will stop them from going flat as well. NOTE: We do not offer exchanges. The airtight Thermos will keep your soda fizzy and the vacuum insulation will keep it cold. Stainless steel contains chromium which, when exposed to oxygen in the atmosphere forms a thin invisible layer called chromium oxide.