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.
If some columns are off-screen, scroll the table horizontally →
| 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.
If some columns are off-screen, scroll the table horizontally →
| 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