Gas Filter system: Gas Clean Filter
Our Gas Clean Filter System provides enhanced gas quality for maximum productivity. Clean gases reduce the risk of column damage, sensitivity loss, and instrument downtime. Contaminants in gases can significantly affect your analysis. Oxygen, hydrocarbons, and moisture can cause loss of sensitivity and accuracy of the GC and damage your column. Impurities activate glass wool in liners and accelerate septa degradation, causing high background signals and ghost peaks, which leads to time-consuming troubleshooting. Inserting a Gas Clean Filter System in the gas line immediately before the instrument inlet greatly reduces the level of impurities, thus improving trace analysis. Contaminants entering your GC column will also be reduced, which is critical for high-temperature analysis and essential for longer column lifetime.
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Filter selection
Supply gases can pick up contaminants from every part of the gas line. You therefore need a Gas Clean Filter System even if your supply gas is of the highest quality – it is not economical to buy expensive, high purity gases if their quality is downgraded by impurities in the gas line.
Different filters are available. Each fast-stabilizing absorbent is packed in a transparent and virtually unbreakable, heavy-walled polycarbonate housing. Our full range offers you:
- A GC/MS Filter that delivers faster stabilization times for lower gas consumption and faster set-up time. The single filter unit with a combination of filters removes oxygen, moisture, and hydrocarbons from carrier gas for MS applications.
- A Moisture Filter that also delivers faster stabilization times for increased productivity in GC. Water removal prevents needless hydrolization damage to the stationary phase, fused silica
surface, glass wool, or septum. - An Oxygen Filter that prevents oxidation of the liquid stationary phase, septum, or glass wool in GC.
- A Charcoal Filter that removes organic compounds and ensures correct performance of FID detectors in GC.
- A new Carbon Dioxide Filter that eliminates CO2 from supply gas. When combined with a Moisture Filter, it is ideal for zero-air gas generators.
All GC applications benefit from the use of Gas Clean Filters, whether your GC is connected to an FID or MS or to any other type of detector, such as flame photometric, thermal conductivity, electron capture, nitrogen-phosphorous, or thermoionic.
Modular design for easy mounting
The Gas Clean Filter System consists of two key parts: the connecting unit and the filters. The connecting unit has inlet and outlet connectors for the gas lines, and the system can be wall-mounted or fixed to a bench. Connecting units come with a 1, 2, or 4 filter capacity and are available for 1/4 in. or 1/8 in. gas lines.
| Technique | Filters | Benefit |
| GC/MS | GC/MS Filter (Triple Filter) | Higher data accuracy and less maintenance |
| GC column | Moisture Filter and Oxygen Filter | Longer lifetime |
| ECD detector (GC) | Moisture Filter and Oxygen Filter | Greater sensitivity |
| TCD detector (GC) | Moisture Filter and Oxygen Filter | Greater sensitivity and less maintenance |
| PID detector (GC) | Oxygen Filter and Charcoal Filter | Greater sensitivity |
| PFPD or FDP detector (GC) | Charcoal Filter, CO2 Filter, and Moisture Filter | Greater sensitivity |
| TSD or NPD detector (GC) | Charcoal Filter, CO2 Filter, and Moisture Filter | Greater sensitivity |
| Zero-air generator | CO2 Filter and Moisture Filter | Cleaner gas |
| Filter-Type | Order No. |
| Gas Clean Moisture Filter with H2O-Indicator | AT 0008 01 03 |
| Gas Clean Oxygen Filter with O2-Indicator | AT 0008 01 04 |
| Gas Clean Charcoal Filter | AT 0008 01 05 |
| Gas Clean Filter GC-MS (triple filter with H2O- a. O2-Indicator) | AT 0008 03 01 |
| Filter connecting unit with 1 position (1/8") | AT 0009 01 01 |
| Filter connecting unit with 2 positions (1/8") | AT 0009 02 02 |
| Filter connecting unit with 4 positions (1/8") | AT 0009 04 04 |
| Gas Clean Filter Kit GC-MS (1/8"), includes 1 Filter connecting unit and 2 GC/MS filters | AT 0010 01 03 |
| Gas Clean Filter Kit with 4 filters (1/8"), includes 1 oxygen- a. moisture- and 2 charcoal-filters with 4 Pos. connecting unit | AT 0010 04 04 |
Download
Gas Clean Filter: technical specifications.pdf
Gas Clean Filter: connecting diagram of common detectors.pdf
