Nitrogen and air generators
F-DGSi nitrogen and zero air generators produce gas from compressed air by PSA — nitrogen for LC-MS and evaporation (up to 70 l/min, purity up to 99.99%) and clean air for FID detectors. Combined nitrogen-plus-air units are also available.
- Nitrogen and zero air from compressed air — PSA technology
- Nitrogen up to 70 l/min, purity adjustable from 99 to 99.99% (CALYPSO series)
- Zero air with hydrocarbons and CO below 0.05 ppm
- Air purity classes from zero air to ultra zero air and CO2-free
- Combined units — nitrogen and clean air in one enclosure
Nitrogen and air generators make gas from compressed air by pressure swing adsorption (PSA) — a sieve bed separates the stream into nitrogen and oxygen while a drying stage removes water vapour. Instead of cylinders and dewars, the lab has a steady source of gas at a repeatable purity, matched to the instruments it supplies.
Nitrogen generators (PSA)
Nitrogen serves as the gas for LC-MS, for sample evaporation and as a blanket gas. Purity is traded off against flow — the lower the flow, the higher the purity reached.
| Model | Flow | Purity | Notes |
|---|---|---|---|
| CALYPSO (.15–.70) | 15–70 l/min | 99–99.99% (adjustable) | PSA, up to 8 bar — LC-MS supply |
| CELENO | up to 20 l/min | > 99.5%, dew point < −60°C | PSA, for GC×GC with cryo |
Air generators (zero air)
Clean air fuels flame detectors (FID, FPD) and other applications where the hydrocarbon background must be negligible. The models differ by purity class.
| Model | Class | Purity | Flow |
|---|---|---|---|
| COSMOS ZA | zero air | hydrocarbons and CO < 0.05 ppm | 1–30 l/min, up to 6.5 bar |
| COSMOS ZA.TOTAL | zero air total | additionally free of CO₂ and NO | per configuration |
| DEIMOS UZA | ultra zero air | free of H₂O and hydrocarbons | per configuration |
| DEIMOS CO2.FREE | CO₂-free air | free of CO₂ and H₂O — for FT-IR | per configuration |
Combined nitrogen and air units
When one workstation needs both gases, we turn to the combined CALYPSO 2G and 3G models. For example, the CALYPSO 3G.SC delivers 12–18 l/min of nitrogen (purity > 99%) plus clean, dried air at a −55°C dew point and under 0.1 ppm hydrocarbons in a single enclosure (PSA with a membrane dryer).
How to choose
Selection depends on the instrument types, the flow required and the gas purity class. Send us your equipment list and we will match a nitrogen, air or combined generator and prepare a quote.
Datasheet (PDF) — coming soon