The only differences between custom glass water bottles are price and features, right? Wrong! Surprised? Believe it or not, not all glass is created equal, which means that there ARE material differences to consider when shopping for the best custom glass water bottles for your project.
Glass is seen by many as the purest way to drink water. After all, glass is a non-porous surface, which means that it won’t absorb odors or tastes. Glass is the only widely-used packaging material considered “GRAS” or “generally recognized as safe” by the U.S. Food and Drug Administration. It’s also 100% recyclable and can be reused endlessly with no loss in quality or purity, according to the Glass Packaging Institute. Glass water bottles can withstand high temperatures without melting, so you can feel free to put your glass bottles in the dishwasher without incident. (the same may not be true for add-ons like silicone sleeves or plastic lids).
Nearly all glass water bottles are made from one of two types of glass: soda-lime or borosilicate. Soda-lime glass is the most common type of glass water bottle, and the less expensive of the two. It’s not as resistant to heat or sudden temperature changes. For the purpose of a drinking vessel, soda-lime glass is widely acceptable and provides the user with the purity of glass at a slightly lower price.
Borosilicate glass has a higher resistance to temperature change. It’s a little trickier to manufacture, and it comes at a higher cost than soda-lime. However, borosilicate’s cost is moderate when measured against its durability. Pyrex glass bakeware used to be made from borosilicate glass, so the term “they don’t make it like they used to” really applies!
Both types of glass are wonderful for water bottles, and while borosilicate is more heat resistant and more expensive, soda-lime glass bottles are beautiful and useful as well.
So, while not all glass is created equal, the best custom glass water bottles for your project really depend on budget and style. The type of glass used for each of our glass bottles is clearly noted on the product page, and is really meant to inform our clients—not sway them to or away from a bottle.