Permeation Calibration System

Cal-G Permiation Calibration System

Calibration Gas

Stop using calibration gas cylinders and produce your own calibration gasses in-house.
The Cal-G is a Standard Gas Calibrator. In gas chromatography, the identification of the peaks is not an easy task. More ever, once you have identified one, the quantification of concentration is an other challenge. With the Cal-G, it is possible to generate well known gases at well known concentrations.

Permeation Tubes

The Cal-G uses the technology of permeation. The permeation tubes are Teflon tubes filled with a specific component in a liquid-vapor phase. The permeation rate of the tube is a direct function of the temperature. With the Cal-G, a large scale of concentrations can be reached by changing the temperature or by modifying the dilution air flow. The device automatically calculates the flow in dependence of the requested final gas concentration.
External Ultra Zero Air generator is required to dilute what is going out of the permeation oven.

Calibration Gas Generator

Working principle:
The permeation tubes are placed in a thermostated oven. Part of the Air flow is going through the oven to collect the result of the permeation. The other part of the flow is used to dilute to the ppb/ ppm level the result of the permeation (and if the option is installed, to dilute the High concentrated gas cylinder). Once diluted, the standard gas is ready to be injected in the GC (Or used for the calibration of diffusion tubes, if the option “flow generator” is installed).
The Cal-G is mainly used for the peak identification and quantification of the concentration (calibration). This can be performed either directly to a GC or to saturate reference diffusion tubes.