Nalgene™ Polypropylene, Carboy with 3 in. Sanitary Neck - FAQs

How strong are the handles of your Nalgene polypropylene carboys and how do you test the strength of the handles?

Nalgene polypropylene carboys are safe to lift by the handles when full, as they are capable of supporting at least double their intended weight on a single handle.
To test the strength of the carboy handles, carboys are suspended through a single handle on the carboy body. 10 L, 20 L, and 50 L carboys are tested by filling the container with steel ballast pellets to a weight in excess of double the weight of the carboy filled to nominal capacity with water.