0.7 liter water bottle: That's why just as much liquid fits in

Perhaps you have ever wondered why sparkling water in water bottles is often exactly contained in 0.7 liters? From the "useless knowledge" category we explain the story behind it and the purpose of this measure.

Why a water bottle holds 0.7 liters

Many beverage bottles hold 0.75 or one or 1 liter of liquid.

• However, if you buy mineral water in glass bottles, these often contain 0.7 liters. These bottles even have their own melodious name: they are called standard fountain bottles.
• The measure is not chosen arbitrarily. The inventor of the standard fountain bottle wanted to guarantee carbon dioxide in the drink until the last sip.
• Larger bottles with a capacity of around 1 liter often no longer contain carbon dioxide if they have been drunk several times.
• Because opening the bottle more often allows too much carbon dioxide to escape than there is much left over until the last rest.

History of the standard fountain bottle - a designer piece

The standard fountain bottle was introduced in Germany in 1969.

• It is a real designer piece. It was designed in 1968 by industrial designer Günter Kupetz.
• The design is well thought out. The bottle has a constriction in the middle for a secure grip in the hand of the drinker.
• This is visually spiced up and improved by the knobs above it - which, by the way, have given the standard fountain bottle the second name pearl bottle. This is a grip improvement - especially when the bottle is wet.
• By the way: Each bottle has exactly 230 knobs.
  
• Not only the shape of the bottle was new, but also the closure. The screw cap is not only practical for the consumer, but also facilitates filling and thus production.
• Incidentally, the standard fountain bottle is extremely environmentally friendly. The reusable bottle, which is subject to the deposit regulation, is made of glass, is very easy to clean automatically and can be reused up to 50 times.
• The design is so unique that the standard fountain bottle made it onto a special stamp series in 1999 entitled "Design in Germany".

Read in the next article: Drinking myths about water - that's really true.