Flasks

Are the flasks made of glass or plastic?

Who broke thirteen test tubes, three volumetric flasks and a pipette in the laboratory?

The school won't turn on the air conditioning, so the students are going to throw their hot water flasks off of the balcony in protest.

Obviously, we don't know if those thermos flasks are their own.

Big overcoats and high boots suddenly became fashionable because they could easily conceal flasks, giving birth to the term “bootlegger.”

The laboratory table was full of flasks, retorts, test tubes, and similar equipment.