Permeation Calibration System

Calibration Gas

Stop using calibration gas cylinders and produce your own calibration gasses in-house.

The •red Permeation Calibration System produces gas suitable for GC calibration and calibration of other instrumentation requiring gasses at known ppb and ppm levels.

In gas chromatography, the identification of the peaks is not an easy task. More over, once you have identified one peak, the quantification of concentration is an other challenge. With the •red Permeation Calibration System, it is possible to generate common gases at known concentrations.

Permeation Tubes

The •red Permeation Calibration System 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 •red Permeation Calibration System, 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 depending on the final required gas concentration.

An external Ultra Zero Air generator is required to dilute calibration gasses from the permeation oven.

Calibration Gas Generator

How the calibration gas generator works:

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 •red Permeation Calibration System 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.