The DG230 In-Line Degasser operates on the principle of Henry's Law to remove dissolved gases from HPLC eluent. Henry's Law states that the mole fraction of a gas dissolved in a liquid is proportional to the partial pressure of that gas in the vapor phase above the liquid. If the partial pressure of a gas on the surface of the liquid is reduced, for example, by evacuation, then a proportional amount of that gas comes out of solution. The In-Line Degasser uses a gas-permeable polymer membrane channel to carry the eluent through the vacuum chamber. When the eluent enters the vacuum chamber, the vacuum maintains a large differential in gas concentration across the membrane. This Accelerates the rate at which the dissolved gases diffuse through the polymer membrane into the vacuum chamber. The gases are then carried away by the vacuum pump. Character: • Flow-through vacuum degassing chamber with a single amorphous perfluorinated copolymer (Teflon® AF) degassing membrane • Continuously vented vacuum system • ZHCR® Vacuum pump - a two-stage, series, stepper motor driven, vacuum pump with a unitary PTFE diaphragm (designed specifically for the rigors of HPLC degassing) • Microcontroller self-test vacuum sensor validation on power-up • Continuous vacuum system monitoring to ensure optimum operational conditions are maintained • Vacuum system fault detection and shutdown function indicators • High-efficiency degassing • "Ready to run" a shorter equilibration time • Zero baseline fluctuation • Low running noise function indicators Channels: 1-5 Max flow of single channel: 10mL/min Wetted materials: Teflon® AF Degassing channel limited pressure: 4.8 x 105 Pa Channel volume: 480μ L Channel internal diameter: 1.2mm Pressure drop: 3.9mmHg/mL/min Power requirement: DC 15V-24V Dimension: 190mm x 140mm x 56mm.
