She kept two silver hip-flasks tucked into the lining of her coat during the cold winter festival.

The technician carefully inspected the Büchner flasks before beginning the filtration.

The hikers packed several vacuum flasks to keep their tea warm during the chilly morning trek.

The laboratory stored several Dewar flasks filled with liquid nitrogen in a secure cabinet.

The lab stocked several Florence flasks on the shelf, ready for the distillation.

During the festival, the duo hid their pocket-flasks in their jackets and toasted to old memories.

At the music festival, several friends secretly passed around their pocket flasks to stay warm during the chilly night.

Careful handling of Schlenk flasks is essential when performing air-sensitive syntheses.

She carefully rinsed the conical flasks before beginning the titration.

The students carefully labeled the Erlenmeyer flasks before beginning the titration.