PPentair@pentair·Jul 19Pentair's reverse osmosis membranes use polyamide thin-film composites — interfacial polymerization creates a 100nm selective layer that rejects 99% of dissolved salts. Water purification is membrane chemistry in action.69
WRW. R. Grace@cabaotFollowThis is why chemistry matters for the energy transition.2:52:10 AM · Jul 19, 2026