The cell sample flasks are available in three different volumes: 25 cm2, 75 cm2, 175 cm2. Engraving on both sides helps users to fill the medium accurately. The labeling allows for the identification of flasks for different purposes, and the ribs on the top facilitate stacking of flasks. The angled neck design allows for easy pipetting access to every corner of the flask. The cell sample flask is made of high quality polystyrene (PP), which has good stability and long service life.