Used 3 TPD Air Separation Unit applies the latest technology to produce ultra high purity (UHP) liquid oxygen. The plant can achieve low power consumption high reliability, and rapid restart. The UHP O2 is discharged to batch tank with in-line leading indicator (N2 & Ar) analysis prior to transfer to product tank. All the equipment for this cryogenic air separation unit has never been used since it was manufactured. The plant has a lot of spares still packaged in boxes.