Assembling the Zero Gas Source
• Locate the Zero Gas Filter Assembly. It consists of a Parker/Balston filter with a 1/4" union connector
over each end and a short section of 1/4" natural air line connected to the down-stream port.
• Connect the 1/4" natural air line of the Zero Gas Filter Assembly to the “Zero Gas” port of the UGC.
• Using an appropriate length of 1/4" natural air line, connect the filter end to the bottom port of the
Soda Lime column. The top port is open to room air.
Assembling the Span Gas Source
• Locate the Span Gas Supply Assembly. It consists of 6 meters (20 feet) or more of yellow 1/4" air line
joining with a male quick-connect fitting plug and a yellow ruby restrictor.