4 ms·

Are you saying that helium, a non reactive noble gas, can not be purified, or more properly, separated from other gas components?

• rtkwe 7y ago
  It can be purified but it's probably cheaper to not purify since there's a market for the impure versions and even the pure version is being sold very cheaply.
  • MisterTea 7y ago
    The point is it's a poor excuse to frivolously use helium simply because it's dirty.