3 ms·

Of course, a reverse osmosis filter system made of...Plastic.

• aardvarkr 2y ago
  Honestly what else are you going to make it out of? Metal? What about rust? Horrible idea to make it out of metal.
  • dghlsakjg 2y ago
    Is this sarcasm? Rust is fine to consume, but there are also metals that don’t corrode in water.
    • malfist 2y ago
      Semipermeable osmatic membranes cannot be made out of metal