On-Line degassing has been shown to be more effective at removing dissolved gas from mobile phases than sonication or helium sparging. Up to five solvent lines can be degassed simultaneously by one unit. The extremely low volume of each PTFE AF channel (480 μl) offers very quick equilibration and very short start-up times.

• Considerably shorter equilibration/re-equilibration times
• Very easy to prime
• Short vacuum pull-down times, typically 3 minutes
• PTFE AF has the ability to remove pre-pump bubbles

ZHCR® (Zero Hysteresis Constant Run) stepper motor driven vacuum pump, specifically designed and developed for membrane degassing of HPLC mobile phase. This patented control strategy allows the On-Line Degasser to maintain a virtually constant vacuum that is unaffected by varying degassing loads. As a consequence, fluctuations in baseline due to vacuum hysteresis are eliminated by not having the pump repeatedly stop and start as is done in many older and existing systems.

Degassing capacity: ~2 ppm O₂ at 1 ml/min