Вот определение из Википедии:
Nalgene (sometimes referred to as Nalge Nunc International) is a distributor and manufacturer of plastic laboratory containers that has diversified into the field of containers for outdoor sports.

Its original line included jars, bottles, test tubes, graduated cylinders, Petri dishes, and the like. At the time of introduction, these products were helpful to laboratory workers such as chemists and biologists because they were shatterproof and lighter than glass. They also make polycarbonate cages and cage accessories for lab animals. The properties of the respective plastics make them suitable for work with many materials, in various temperature ranges.