Chosun Instrument Inc.

  i.      Patented product that does not use NaOH or KOH.

 ii.      When carbon dioxide is absorbed, the absorbent’s color permanently changes to purple, and unlike existing products, it does not return to its original color even after time passes, so users can exactly know the replacement period.

 iii.      Does not generate harmful substances (Compound A, Carbon Monoxide) when carbon dioxide is absorbed, ensuring patients and medical staff safety.

 iv.      Longer use time, less replacement period.