Durability
Introduction
Anything can be broken; however, BetterBottle carboys are properly described as unbreakable, the complete opposite of fragile. BetterBottle has used two harsh tests to evaluate the designs of its carboys. The carboys are first filled 90% full with water having a temperature of approximately 21°C (75°F). One test involves dropping a closed carboy, bottom down onto a smooth concrete floor. Another test involves repeatedly flexing the lower edge of a full, unsealed carboy by rolling it on a smooth concrete floor.

Important: The fact that BetterBottle carboys are extremely durable does not mean they should be handled roughly in routine use – they are carefully made and it is expected that they will be carefully handled.
Tests
Drop Test – Amazing, but don't do this on purpose

For the BetterBottle Drop Test, a carboy is filled with ~21°C water to approximately 90% capacity, capped with an LDPE single-use closure, and dropped, bottom down, on a smooth concrete floor from a height of 1.6 meters (5 feet 3 inches). If a carboy shows no visible signs of rupture after five (5) drops, it is given a passing grade; however, it is not uncommon for carboys to withstand being dropped more than ten times.

Edge Roll Test – Over 1 KM (0.62 miles) of rolling

For the BetterBottle Edge Roll Test, a carboy is filled with ~21°C water to approximately 90% capacity, fitted with a vented closure that is equipped with a swivel handle, tilted at about a 25° angle, and rolled round and round over 1300 times, the equivalent of more than 1 kilometer (2/3 mile), on a smooth concrete floor. If a carboy shows no visible signs of cracking prior to the end of the test, it is given a passing grade.



Important: This test is impressive; however, when swirling a carboy, a tennis ball should be placed under the punt of the carboy to prevent its edge from contacting the surface and being repeatedly flexed. There is no point in pushing limits.