Falcon Cell Culture Flasks provided by STE-Mart are made of polystyrene (PS) raw materials. The flask bottom is designed with hollow for the rapid transmission of gas in the incubator. Arc shape bottom and angled neck, can help you to obtain a complete growth surface easily. For TC Treated models, the ultra-vacuum plasma surface modification (TC treated) process enhances the adherence performance of the cells, providing more conducive growth environment to the cells, while Non-Treated models are ideal for non-adherent cell suspension culture. For Vent Cap models, 0.2µm vent cap offers good sealing performance and ventilation effect.