Connecting the nitrogen exhaust line

Required materials

• Chemical-resistant, powder-free gloves
• Utility knife
• Nitrogen exhaust trap bottle
• 4-mm PTFE tubing and 12-mm PTFE tubing (included in the SELECT SERIES MRT installation kit)

To connect the nitrogen exhaust line:

Warning: To avoid exposure to toxic solvent vapor:

• The source exhaust line supplied with the system must be fed into a ducted laboratory fume hood or connected to a laboratory exhaust system. The laboratorY exhaust system must be capable of supporting a gas load of 2000 L/hour.
• The pressure within the laboratory exhaust must be less than atmospheric pressure, but not less than -10 mbar gauge, while under gas load.
• When running an LC with a high aqueous flow (≥ 60% water at ≥ 0.5 mL/min), liquid solvent may condense and accumulate in the laboratory exhaust system, in which case, Waters recommends that the exhaust system include the capability to drain off any solvent accumulation, or that the exhaust system is designed to prevent condensation, for example, by being open and maintaining a gas flow of at least 5000 L/hour through the exhaust system.

Warning: To avoid personal contamination with biologically hazardous, toxic, and corrosive materials, wear chemical-resistant, powder-free gloves when performing this procedure.

Notice: To prevent serious damage to the instrument, two separate exhaust systems are required: one for nitrogen, the other for the roughing pumps. Vent the exhausts to atmosphere through separate lines. Oil mist can seriously damage the instrument if the nitrogen exhaust line connects with the roughing pump exhaust line. Your warranty does not cover damage caused by routing exhaust lines incorrectly.

1. Locate the nitrogen exhaust trap bottle in an accessible area below the instrument.