1434 Filtering Fask, with upper and lower side tube
Structure and Function as below:
Upper mouth (side tube): located at the shoulder of the bottleneck, connected to a vacuum pump or vacuum pump, used to extract air from the bottle to create negative pressure and accelerate the filtration process.
Lower nozzle (bottom tube): located on the bottom side of the bottle, opposite to the direction of the upper nozzle, used to release the filtrate during or after the filtration process. It can be operated continuously without disassembling the device to avoid frequent liquid transfer.
Material and specifications: Usually made of high borosilicate glass, resistant to temperature difference and negative pressure;