Hypres Equipment has developed an oxygen cleaning process that conforms to the requirements of CGA and ASTM and is one of the best processes available.  Utilizing a brand-name Ultra-Sonic Cleaner and a Black-Light Detection System for Quality Assurance, this process meets or exceeds the published requirements of the Compressed Gas Association (CGA G-4.1) and the American Society for Testing and Materials (ASTM G 93).