¡ETefion (PTFE) - ¾A¥Î©ó«I²¤©Ê·»¾¯¡B±j»Ä, ¤£¾A¥Î©ó¤ô¨t·»²G ¡E100 ¤ù/²° ¡EMembrane of PTFE----PTFE (Teflon) can be used to filter solvents and strong acids. Although PTFE is inherently hydrophobic, it can be made hydrophilic by pre-wetting the membrane with methanol and then rinsing with water.