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NG Series · LNI Swissgas

Laboratory Nitrogen Generators
for LC-MS, GC-FID & ICP-MS

PSA and membrane technology delivering ultra-high purity nitrogen for LC-MS, GC-FID, ICP-MS, FTIR, and sample evaporation. Eliminate gas cylinders with continuous on-demand generation. Part of SLI’s complete line of laboratory gas generators.

Request a Quote → Explore Models ↓
99.9999% Max Purity
30+ Models Available
150cc – 350 L Flow Range
130 psi (9 bar) Max Pressure
Choose Your Format

Five product families for every lab

From compact benchtop PSA units to high-flow membrane systems, the NG Series covers every nitrogen application — from single-instrument supply to central lab distribution.

🔬

NG EOLO Series

Compact PSA benchtop units. Ultra-high purity up to 99.9999% for GC-FID, LC-MS, and single-instrument supply.

4 models · 500–4000 cc/min
📐

NG EOLO XL

Floor-standing PSA generators with internal nitrogen tank. Up to 99.9999% purity. ZNG variant adds CH4 scrubbing.

7 models · 5 / 10 / 16 / 18 L/min
🧪

NG SIRIO Series

High-flow PSA generators with dual built-in piston compressors. Stackable with HG and ZA units.

CD / CD HP · up to 20 L/min
🖥️

NG RACK Series

Standard 19" rack-mount PSA nitrogen generators for instrument bays. 4U, 5U, and 7U profiles available.

3 families · 150 cc–2000 cc/min
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NG CASTORE XS iQ

Integrated scroll-compressor units — no external air supply needed. LC-MS grade with touchscreen controls.

4 models · 15 / 18 / 24 / 36 L/min
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NG CASTORE XL iQ

High-capacity integrated compressor systems. LC-MS and 3D laser printing variants. Optional UHP collision cell outlet.

5 models · 20–70 L/min
🏭

NG CASTORE BASIC / PRO

High-volume membrane generators for central lab supply and industrial applications. Requires compressed air source.

Multiple models · 10–350 L/min
🖨️

CASTORE XL iQ 3D Printing

Purpose-built for 3D laser printing. Laser-grade nitrogen reduces oxygen in build chambers to prevent oxidation.

1 model · up to 70 L/min · 130.5 psi (9 bar)
🔗

NGA CASTORE iQ Series

Nitrogen + dry air from one unit. Instrument-specific models for SCIEX, Shimadzu, PerkinElmer QSight, Agilent MP-AES, and universal LCMS.

7 models · N₂ 15–40 L/min + Air
Benchtop PSA Models

NG EOLO Series

Ultra-high purity compact PSA generators. Ideal for GC-FID make-up gas, LC evaporator nitrogen, and sample preparation. No external compressed air required.

LNI Swissgas NG EOLO 500 Nitrogen Generator
EOLO 500

NG EOLO 500

500 cc/min
  • Purity99.9999%
  • Dew Point<−60°C
  • THC<0.1 ppm
  • Size (W×D×H)27×48×28 cm

Ultra-compact PSA unit for single GC-FID instrument supply. Long-life molecular sieve drying.

LNI Swissgas NG EOLO 750 Nitrogen Generator
EOLO 750

NG EOLO 750

750 cc/min
  • Purity99.9999%
  • Dew Point<−60°C
  • THC<0.1 ppm
  • Size (W×D×H)27×48×28 cm

Ideal for GC-FID and LC evaporator applications requiring moderate flow rates.

LNI Swissgas NG EOLO 1300 Nitrogen Generator
EOLO 1300

NG EOLO 1300

1300 cc/min
  • Purity>99.995%
  • Dew Point<−60°C
  • THC<0.1 ppm
  • Size (W×D×H)27×48×28 cm

Mid-range PSA unit for multiple detectors or high-demand instruments.

LNI Swissgas NG EOLO 4000 Nitrogen Generator
EOLO 4000

NG EOLO 4000

4000 cc/min
  • Purity>99.0%
  • Dew Point<−60°C
  • THC<0.1 ppm
  • Size (W×D×H)27×48×28 cm

High-flow benchtop PSA unit for ELSD, sample evaporation, or multi-instrument supply.

Floor-Standing PSA Models

NG EOLO XL Series

High-capacity PSA generators with internal nitrogen tank and exclusive electronic flow control. Up to 99.9999% purity from external compressed air. The ZNG EOLO XL variant adds an integrated CH4 catalyst module for hydrocarbon removal below 0.1 ppm.

NG EOLO XL 5
EOLO XL 5

NG EOLO XL 5

5 L/min
  • Purity99.9999%
  • Dew Point<−50°C
  • Air Inlet75 L/min max
  • Size (W×D×H)50×56×120 cm

For GC, ICP, TOD, DMA, TMA, TGA, and DSC applications.

NG EOLO XL 10
EOLO XL 10

NG EOLO XL 10

10 L/min
  • Purity99.9999%
  • Dew Point<−50°C
  • Air Inlet95 L/min max
  • Size (W×D×H)50×56×120 cm
NG EOLO XL 16
EOLO XL 16

NG EOLO XL 16

16 L/min
  • Purity99.9995% @ 16 L/min
  • Dew Point<−50°C
  • Air Inlet110 L/min max
  • Size (W×D×H)50×56×120 cm
NG EOLO XL 18
EOLO XL 18

NG EOLO XL 18

18 L/min
  • Purity99.999% @ 18 L/min
  • Dew Point<−50°C
  • Air Inlet120 L/min max
  • Size (W×D×H)50×56×120 cm

Highest capacity EOLO XL. ZNG variant available with integrated CH4 catalyst oven (<0.1 ppm HC).

ZNG EOLO XL Variant

The ZNG EOLO XL series adds an integrated catalyst module that removes hydrocarbons to <0.1 ppm — ideal for GC applications requiring ultra-clean carrier gas. Available in 5, 10, and 18 L/min configurations.

High-Flow PSA Models

NG SIRIO Series

High-capacity PSA nitrogen generators for demanding labs. Floor-standing units with RS-485 connectivity and optional hydrocarbon scrubbing down to <0.05 ppm.

NG SIRIO 1500
SIRIO 1500

NG SIRIO 1500

1500 cc/min
  • Purity99.9999%
  • Pressure80 psi (5.5 bar)
  • Dew Point<−60°C
  • Size (W×D×H)43×75×68 cm
NG SIRIO 3000
SIRIO 3000

NG SIRIO 3000

3000 cc/min
  • Purity99.9995%
  • Pressure80 psi (5.5 bar)
  • Dew Point<−60°C
  • Size (W×D×H)43×75×68 cm
NG SIRIO 5000
SIRIO 5000

NG SIRIO 5000

5000 cc/min
  • Purity99.99%
  • Pressure80 psi (5.5 bar)
  • Dew Point<−60°C
  • Size (W×D×H)43×75×68 cm
NG SIRIO 5000 HP
SIRIO 5000 HP

NG SIRIO 5000 HP

5000 cc/min @ 116 psi (8 bar)
  • Purity99.999%
  • Pressure116 psi (8 bar)
  • Dew Point<−60°C
  • Size (W×D×H)43×75×68 cm

High-pressure variant for applications requiring elevated delivery pressure.

NG SIRIO 8000
SIRIO 8000

NG SIRIO 8000

8000 cc/min
  • Purity99.7%
  • Pressure80 psi (5.5 bar)
  • Dew Point<−60°C
  • Size (W×D×H)43×75×68 cm

Maximum flow PSA model. Ideal for central lab supply to multiple instruments simultaneously.

Integrated Compressor PSA Models

NG SIRIO CD / CD HP

Self-contained PSA generators with two smart, long-life 100% oil-free piston compressors built in — no external compressed air needed. Up to 99.999% purity at 20 L/min. Stackable with HG and ZA units.

NG SIRIO CD
SIRIO CD

NG SIRIO CD

20 L/min
  • PurityUp to 99.999%
  • Pressure (Max)80 psi (5.5 bar)
  • Dew Point<−60°C
  • Noise<58 dB(A)
  • Size (W×D×H)43.5×82×68 cm

Standard pressure variant. Dual 100% oil-free built-in piston compressors. Stackable design. Available in 220–240 VAC and 100–115 VAC versions.

NG SIRIO CD HP
SIRIO CD HP

NG SIRIO CD HP

20 L/min @ 101.5 psi (7 bar)
  • PurityUp to 99.999%
  • Pressure (Max)100 psi (7 bar)
  • Dew Point<−60°C
  • Noise<58 dB(A)
  • Size (W×D×H)43.5×82×68 cm

High-pressure variant delivering up to 101.5 psi (7 bar) — ideal for applications requiring elevated delivery pressure. Same footprint and compressor design as the CD.

19" Rack-Mount Models

NG RACK Series

Standard 19" rack-form PSA nitrogen generators for integration into instrument bays and lab benches. Three profiles — 4U with integrated compressor, 5U and 7U requiring external compressed air. Optional CH4 scrubber and desiccant columns available across the range.

NG RACK 4U C
RACK 4U C

NG RACK 4U C

150 or 500 cc/min
  • Purity>99.9999% (150 cc)
  • Pressure (Max)79.8 psi (5.5 bar) / 58 psi (4 bar)
  • Air SourceBuilt-in compressor
  • HC Content<0.05 ppm (opt.)
  • Dimensions19" Rack 4U · 54 cm deep

Only rack model with integrated oil-free compressor — truly standalone. Optional catalyst oven for HC removal. For ICP, ELSD, GC, FTIR, incubators.

RACK 5U

NG RACK 5U

600 or 1000 cc/min
  • Purity>99.9999% (600 cc)
  • Pressure (Max)Inlet – 29 psi (2 bar) · up to 116 psi (8 bar)
  • Air SourceExternal required
  • Dew Point<−60°C
  • Dimensions19" Rack 5U · 48 cm deep

Stackable with HG and ZA units. Optional CH4 oven scrubber for HC removal to <0.05 ppm. Requires external compressed air (ISO 8573-1 Class [1:3:1]).

NG RACK 7U
RACK 7U

NG RACK 7U

2000 cc/min
  • Purity>99.9999%
  • Pressure (Max)Inlet – 29 psi (2 bar) · up to 116 psi (8 bar)
  • Air SourceExternal required
  • Dew Point<−60°C
  • Dimensions19" Rack 7U · 55 cm deep

Highest-flow rack model. Optional CH4 scrubber option. Stackable with HG and ZA generators for complete gas panel solutions.

Integrated Compressor Models

NG CASTORE XS iQ Series

Self-contained units with built-in scroll compressor — simply plug in and produce LC-MS grade nitrogen. No compressed air infrastructure required.

NG CASTORE XS iQ 15
XS iQ 15

NG CASTORE XS iQ 15

15 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • Dew Point<−60°C
  • Size (W×D×H)51×85×69 cm
NG CASTORE XS iQ 18
XS iQ 18

NG CASTORE XS iQ 18

18 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • Dew Point<−60°C
  • Size (W×D×H)51×85×69 cm
NG CASTORE XS iQ 24
XS iQ 24

NG CASTORE XS iQ 24

24 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • Dew Point<−60°C
  • Size (W×D×H)51×85×69 cm
NG CASTORE XS iQ 36
XS iQ 36

NG CASTORE XS iQ 36

36 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • Dew Point<−60°C
  • Size (W×D×H)51×85×69 cm

Highest flow XS iQ model. Ideal for multiple LC-MS instruments or high-demand evaporators.

High-Capacity Integrated Models

NG CASTORE XL iQ Series

High-capacity self-contained nitrogen generators with integrated scroll compressor. Optional UHP collision cell outlet at 99.9999% for ICP-MS applications. No external compressed air required.

NG CASTORE XL iQ 20
XL iQ 20

NG CASTORE XL iQ 20

20 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Size (W×D×H)59×92×73 cm

Dual-purpose: LC-MS grade bulk nitrogen + optional UHP collision cell supply for ICP-MS.

NG CASTORE XL iQ 40
XL iQ 40

NG CASTORE XL iQ 40

40 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Size (W×D×H)59×92×73 cm
NG CASTORE XL iQ 50
XL iQ 50

NG CASTORE XL iQ 50

50 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Size (W×D×H)59×92×73 cm
NG CASTORE XL iQ 70
XL iQ 70

NG CASTORE XL iQ 70

70 L/min
  • PurityLC-MS Grade
  • Pressure116 psi (8 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Size (W×D×H)59×92×73 cm

Highest capacity XL iQ model for large labs or multi-instrument central supply.

NG CASTORE XL iQ 50 Agilent LCMS
XL iQ 50 LCMS

NG CASTORE XL iQ 50

50 L/min · Agilent LCMS
  • PurityLCMS Grade (99.9%)
  • Pressure (Max)116 psi (8 bar)
  • UHP N₂ Option200 cc/min @ 99.9999%
  • Power1.8 kW (220V) / 1.5 kW (115V)
  • Size (W×D×H)59×92×73 cm

Purpose-engineered for all Agilent LCMS applications. Dual N₂ outlets — bulk LCMS grade plus optional 200 cc/min UHP collision cell supply at 99.9999%. Full-range power supply model available (115–240 VAC).

NG CASTORE XL iQ 3D Printing
3D PRINTING

NG CASTORE XL iQ 3D Printing

70 L/min · 130.5 psi (9 bar)
  • Purity<500 ppm O₂ @ 10 L/min
  • Pressure (Max)130 psi (9 bar)
  • Noise<50 dB(A)
  • Power2.2 kW · 220–240 VAC
  • Size (W×D×H)59×92×73 cm

Engineered specifically for 3D laser printing environments. Produces laser-grade nitrogen to reduce oxygen in build chambers and prevent material oxidation during SLS/SLM processes. Programmable flow algorithm (Set Flow Begin/End/Time) for chamber purge cycles. Designed for 24/7 industrial operation.

NGA Series — Nitrogen + Dry Air Combo

NGA CASTORE XL iQ — Instrument-Specific Generators

The NGA (NitroGen + AirGen) CASTORE series produces both LC-MS grade nitrogen and dry instrument air from a single integrated unit. Each model is purpose-engineered to match the exact gas, flow, purity, and pressure requirements of a specific LC-MS platform — plug in and run. All include VOC carbon filtration, direct drive scroll compressor, and automatic standby.

Universal — All LCMS / MP-AES
NGA CASTORE XL iQ 20.40
NGA XL iQ 20.40

NGA CASTORE XL iQ 20.40

N₂: 20 L/min · Air: 40 L/min
  • N₂ PurityLCMS Grade (99.9%)
  • N₂ Pressure130 psi (9 bar)
  • Air Pressure145 psi (10 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Power1.3 kW

Compatible with all LCMS instruments. Optional UHP N₂ collision cell outlet. Dual outlets independently regulated.

NGA CASTORE XL iQ 40.40
NGA XL iQ 40.40

NGA CASTORE XL iQ 40.40

N₂: 40 L/min · Air: 40 L/min
  • N₂ PurityLCMS Grade (99.9%)
  • N₂ Pressure130 psi (9 bar)
  • Air Pressure145 psi (10 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Power1.8 kW

Highest N₂ flow universal NGA model. Ideal for multi-instrument labs or high-demand evaporation workflows.

NGA CASTORE XL iQ 20.60
NGA XL iQ 20.60

NGA CASTORE XL iQ 20.60

N₂: 20 L/min · Air: 60 L/min
  • N₂ PurityLCMS Grade (99.9%)
  • N₂ Pressure130 psi (9 bar)
  • Air Pressure145 psi (10 bar)
  • UHP Option200 cc/min @ 99.9999%
  • Power1.7 kW

High-air-volume variant. Suited for Agilent MP-AES and instruments requiring elevated dry air flow alongside LCMS-grade nitrogen.

NGA CASTORE XL iQ MP AES
MP AES

NGA CASTORE XL iQ MP AES

N₂: 40 L/min · Air: 40 L/min
  • N₂ Purity<500 ppm O₂ @ 10 L/min
  • N₂ Pressure116 psi (8 bar)
  • Air Pressure116 psi (8 bar)
  • Air Dew Point<−30°C
  • Power2.2 kW

Purpose-built for Agilent MP-AES. VOC carbon filter included. SWAGELOK-compatible fittings. Also suitable for LCMS and solvent evaporation.

Instrument-Specific — Plug & Play Compatibility
NGA CASTORE XL iQ SCIEX
SCIEX

NGA CASTORE XL iQ SCIEX

N₂: 20 L/min · 2× Dry Air: 30 L/min
  • N₂ PurityLCMS Grade (99.9%)
  • N₂ Pressure116 psi (8 bar)
  • Air Outlets101 psi (7 bar) + 58 psi (4 bar) independently
  • Air Dew Point<−40°C
  • Fittings¼" SWAGELOK compatible

Configured for SCIEX triple quad and other SCIEX LCMS platforms. Three independently regulated outlets (1× N₂ + 2× dry air). VOC carbon filter. Full-range 115–240 VAC model available.

NGA CASTORE XL iQ SCIEX 7500
SCIEX 7500

NGA CASTORE XL iQ SCIEX 7500

N₂: 32 L/min · 2× Dry Air outlets
  • N₂ PurityLCMS Grade (99.9%)
  • N₂ Pressure65 psi (4.5 bar)
  • Air Outlet 126 L/min @ 105 psi (7.2 bar)
  • Air Outlet 225 L/min @ 105 psi (7.2 bar)
  • Fittings¼" SWAGELOK compatible

Engineered specifically for the SCIEX triple quad 7500. Higher N₂ flow (32 L/min) and dual independently controlled dry air outlets for Gas 1/Gas 2/Bath gas roles. VOC carbon filter, automatic standby, optional O₂ sensor.

NGA CASTORE XS iQ SHI Shimadzu
SHIMADZU

NGA CASTORE XS iQ SHI

40 L/min N₂ + Air combined
  • N₂ PurityLCMS Grade (99.9%)
  • Pressure (Max)115 psi (8 bar)
  • N₂ Dew Point<−30°C
  • Power1500 W
  • Size (W×D×H)51×85×69 cm

Compatible with Shimadzu LCMS-8040, 8045, 8050, and 8060. Compact XS footprint with dual N₂ + dry air outlets. Rated to 4,000 m altitude. Full-range 110–240 VAC model available. VOC carbon filter included.

NGA CASTORE XL iQ QSight
QSIGHT

NGA CASTORE XL iQ QSight

N₂: 15 L/min · Air: 34–67 L/min
  • N₂ PurityLCMS Grade (99.9%)
  • N₂ Pressure115 psi (8 bar)
  • Air Dew Point<−20°C
  • ConfigurationsSingle or Dual Source
  • Size (W×D×H)59×92×73 cm

Purpose-built for PerkinElmer QSight LC-MS/MS instruments. Available in Single Source (34 L/min air) or Dual Source (67 L/min air) configurations for single or tandem instrument setups. Parallel Controller Box with LAN port optional.

What does NGA mean?

NGA stands for NitroGen + AirGen. These units generate both nitrogen and dry instrument air simultaneously from a single compressor and membrane system — eliminating the need for a separate compressed air source or standalone air dryer. Each NGA model is pre-configured for a specific instrument platform with factory-set pressure regulators and flow rates matching OEM requirements.

Pneumatic Membrane · External Air Required

NG CASTORE BASIC

Pneumatically controlled membrane nitrogen generators — no electrical components, no moving parts, zero noise. Wall or floor mountable. Requires an external compressed air source (ISO 8573-1 Class [2:4:1]). Available in compact 10–60 L/min configurations with optional 40 L/min dry air outlet, plus high-volume 150, 180, 200, and 350 L/min models for central facility supply.

Standard Models — 10 to 60 L/min
NG CASTORE BASIC 10
BASIC 10

NG CASTORE BASIC 10

10 L/min
  • Purity>99.5% @ 5 L/min
  • Pressure Inlet – 14.5 psi (1 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm

Compact wall-mount LCMS nitrogen supply. No electrical parts. Optional 50 L N₂ tank accessory.

NG CASTORE BASIC 25
BASIC 25

NG CASTORE BASIC 25

25 L/min
  • Purity>99.5% @ 10 L/min
  • PressureInlet – 14.5 psi (1 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm

LCMS and solvent evaporation. BASIC 25.40 variant adds 40 L/min dry air outlet.

NG CASTORE BASIC 45
BASIC 45

NG CASTORE BASIC 45

45 L/min
  • Purity>99.5% @ 25 L/min
  • PressureInlet – 14.5 psi (1 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm

Mid-range flow for multiple LCMS instruments. BASIC 45.40 adds 40 L/min dry air outlet.

NG CASTORE BASIC 60
BASIC 60

NG CASTORE BASIC 60

60 L/min
  • Purity>98.5% @ 60 L/min
  • PressureInlet – 14.5 psi (1 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm

Highest flow compact BASIC model. Optional dryer for CASTORE BASIC available.

High-Volume Models — 150 to 350 L/min
NG CASTORE BASIC 150
BASIC 150

NG CASTORE BASIC 150

150 L/min
  • Purity>99% @ 120 L/min
  • PressureInlet – 7.2 psi (0.5 bar)
  • Air Req.400 L/min @ 150 L/min N₂
  • Size (W×D×H)35×34×120 cm
NG CASTORE BASIC 180
BASIC 180

NG CASTORE BASIC 180

180 L/min
  • Purity>98.5% @ 180 L/min
  • PressureInlet – 10 psi (0.7 bar)
  • Air Req.540 L/min @ 180 L/min N₂
  • Size (W×D×H)35×34×120 cm
NG CASTORE BASIC 200
BASIC 200

NG CASTORE BASIC 200

200 L/min
  • Purity>97.5% @ 200 L/min
  • PressureInlet – 10 psi (0.7 bar)
  • Air Req.640 L/min @ 200 L/min N₂
  • Size (W×D×H)35×34×120 cm
NG CASTORE BASIC 350
BASIC 350

NG CASTORE BASIC 350

350 L/min
  • Purity96–99.5%
  • PressureInlet – 14.5 psi (1 bar)
  • Air Req.880 L/min @ 350 L/min N₂
  • Size (W×D×H)35×34×145 cm

Highest-volume BASIC model. Central nitrogen supply for entire laboratory facilities. ½" BSPP connections. No electrical parts — silent operation.

Electronic Membrane · External Air Required

NG CASTORE PRO

Electronically controlled membrane nitrogen generators with LCD touchscreen and RS-485. Exclusive electronic flow control optimizes purity while minimizing compressed air consumption. Optional dry air outlet on select models. Quieter than <35 dB(A) — silent enough for open labs. PRO HP variants deliver higher pressure for ELSD, TOC, ICP, and DSC/TGA applications.

PRO HP — High Pressure, Low Flow (ELSD / TOC / ICP / DSC/TGA)
NG CASTORE PRO HP 4
PRO HP 4

NG CASTORE PRO HP 4

4 L/min
  • Purity>99.5% @ 4 L/min
  • Dew Point<−40°C
  • PressureInlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)28×32×120 cm

Smart energy-save mode. For ELSD, TOC, ICP, DSC/TGA. Optional O₂ sensor. LCD touchscreen + RS-485.

NG CASTORE PRO HP 8
PRO HP 8

NG CASTORE PRO HP 8

8 L/min
  • Purity>99.5% @ 8 L/min
  • Dew Point<−40°C
  • PressureInlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)28×32×120 cm

Higher flow HP variant. Same form factor as PRO HP 4. Smart energy-save mode, optional O₂ sensor.

PRO Standard — 25 to 60 L/min (LCMS / Solvent Evaporation)
NG CASTORE PRO 25
PRO 25

NG CASTORE PRO 25

25 L/min
  • Purity>99.5% @ 10 L/min
  • PressureInlet – 14.5 psi (1 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)28×32×120 cm

PRO 25.40 variant adds 40 L/min dry air outlet (dew point <−40°C). WiFi optional.

NG CASTORE PRO 45
PRO 45

NG CASTORE PRO 45

45 L/min
  • Purity>99.5% @ 25 L/min
  • PressureInlet – 14.5 psi (1 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)28×32×120 cm

PRO 45.40 variant adds 40 L/min dry air outlet. Optional O₂ sensor and WiFi.

NG CASTORE PRO 60
PRO 60

NG CASTORE PRO 60

60 L/min
  • Purity>98.5% @ 60 L/min
  • PressureInlet – 14.5 psi (1 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)28×32×120 cm

Highest flow standard PRO. PRO 60.40 adds 40 L/min dry air outlet. Optional O₂ sensor and WiFi module.

NG CASTORE PRO 20.67
PRO 20.67

NG CASTORE PRO 20.67

N₂: 20 L/min · Air: 67 L/min
  • N₂ Purity>99.5% @ 10 L/min
  • Air Dew Point<−35°C
  • PressureInlet – 14.5 psi (1 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)28×32×120 cm

Dual N₂ + high-volume air outlet. Highest air flow PRO model — 67 L/min dry regulated air alongside 20 L/min nitrogen. WiFi optional.

PRO High-Volume — 120 to 350 L/min
NG CASTORE PRO 120
PRO 120

NG CASTORE PRO 120

120 L/min
  • Purity>98.5% @ 120 L/min
  • Dew Point<−70°C
  • PressureInlet – 22 psi (1.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)35×32×120 cm

Best-in-class dew point (<−70°C) for a high-volume membrane generator. LCD, RS-485, optional O₂ sensor. Central lab or high-demand LCMS supply.

NG CASTORE PRO 350
PRO 350

NG CASTORE PRO 350

350 L/min
  • Purity96–99.5%
  • Dew Point<−60°C
  • PressureInlet – 14.5 psi (1 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)35×34×145 cm

Highest-flow PRO model — 350 L/min for central facility nitrogen distribution. LCD touchscreen + RS-485 + optional O₂ sensor. ½" BSPP connections.

Pneumatic Membrane · N₂ + Air + Exhaust

NG CASTORE 3G

Three-gas membrane generators — simultaneously producing nitrogen (curtain gas), dry instrument air (Gas 1/Gas 2), and exhaust air from a single unit and compressed air source. No electrical parts, zero noise. Purpose-designed for SCIEX, Waters, and other LC-MS instruments requiring both nitrogen curtain gas and sheath air from a single supply point.

NG CASTORE 3G 10
3G 10

NG CASTORE 3G 10

N₂: 10 · Air: 26 · Exh: 25 L/min
  • N₂ Purity>99.5% @ 5 L/min
  • Pressure (all)Up to 108 psi (7.5 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm
NG CASTORE 3G 25
3G 25

NG CASTORE 3G 25

N₂: 25 · Air: 26 · Exh: 25 L/min
  • N₂ Purity>99.5% @ 10 L/min
  • Pressure (all)Up to 108 psi (7.5 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm
NG CASTORE 3G 45
3G 45

NG CASTORE 3G 45

N₂: 45 · Air: 26 · Exh: 25 L/min
  • N₂ Purity>99.5% @ 25 L/min
  • Pressure (all)Up to 108 psi (7.5 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm
NG CASTORE 3G 60
3G 60

NG CASTORE 3G 60

N₂: 60 · Air: 26 · Exh: 25 L/min
  • N₂ Purity>99.5% @ 45 L/min
  • Pressure (all)Up to 108 psi (7.5 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)28×35×120 cm

Highest flow 3G model. All three outlets independently regulated. Optional 50 L N₂ + 25 L Air buffer tank accessory available.

What is 3G?

The 3G designation means three simultaneous gas outlets from one unit: Curtain Gas (high-purity N₂), Gas 1 / Gas 2 (dry instrument air for source and sheath), and Exhaust (regulated compressed air). All three independently pressure-regulated. No electrical components — purely pneumatic operation with zero noise.

Benchtop Membrane · Ultra-Low Profile

NG CASTORE DT

Desktop-format membrane nitrogen generators with an ultra-compact horizontal profile (just 15 cm tall). Pneumatically controlled, zero noise, no moving parts. Ideal for lab benches where vertical space is at a premium. Requires external compressed air.

NG CASTORE DT 10
DT 10

NG CASTORE DT 10

10 L/min
  • Purity>99.5% @ 3 L/min
  • Dew Point<−60°C
  • PressureInlet – 7.2 psi (0.5 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)36×67×15 cm

Desktop-mount design, only 15 cm tall. Fits on instrument shelves. Pneumatic control, no electrical components. For LCMS and solvent evaporation.

NG CASTORE DT 35
DT 35

NG CASTORE DT 35

35 L/min
  • Purity>99.5% @ 9 L/min
  • Dew Point<−60°C
  • PressureInlet – 7.2 psi (0.5 bar)
  • NoiseNone (no moving parts)
  • Size (W×D×H)36×67×15 cm

Higher flow DT variant. Same ultra-low 15 cm profile. Depth extends to 75 cm with external filters installed. For high-flow LCMS evaporation.

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Technology

Why choose NG Series

⚗️

PSA Technology

Pressure Swing Adsorption separates nitrogen from air using molecular sieves. Delivers ultra-high purity nitrogen continuously without liquid nitrogen or cylinders.

🔄

Membrane Technology

Hollow fiber membrane modules separate nitrogen from compressed air. Low maintenance, no moving parts — ideal for high-volume industrial and central lab supply.

🔌

Integrated Compressor

XS iQ and XL iQ models include built-in scroll compressors — no compressed air infrastructure required. Truly plug-and-play installation.

🎯

LC-MS Grade Purity

Purpose-built for demanding LC-MS applications. Meets OEM specifications for Agilent, Waters, Sciex, Shimadzu, and Thermo Fisher instruments.

📱

Smart Controls

Touchscreen LCD, RS-485, and RS-232 standard. Real-time purity monitoring, flow control, and remote alarm capability. Optional WiFi on select models.

♻️

Eliminate Cylinders

End cylinder rentals, deliveries, and handling risks. Continuous on-demand generation ensures uninterrupted supply at a fraction of the cylinder cost.

Applications

Proven performance across
analytical methods

From routine LC-MS to high-throughput ICP-MS, NG Series generators supply reliable high-purity nitrogen for the widest range of laboratory applications.

LC-MS / LC-MS/MS

Nebulizer gas, curtain gas, and drying gas for liquid chromatography-mass spectrometry. Meets OEM purity specifications.

GC-FID / GC-NPD

Make-up gas and detector gas for gas chromatography. Ultra-low hydrocarbon content ensures detector baseline stability.

ICP-MS Collision Cell

UHP collision cell gas supply via optional 99.9999% outlet on XL iQ models. Removes polyatomic interferences reliably.

FTIR Purge Gas

Moisture-free nitrogen purge for FTIR optics and sample compartments. Eliminates CO₂ and water vapor interference.

Sample Evaporation

High-flow nitrogen blowdown for solvent evaporation in sample preparation workflows. Turbo Vap and similar systems.

ELSD Detection

Nebulizer gas for Evaporative Light Scattering Detection in LC. Consistent purity critical for detector sensitivity.

Incubators & Storage

Inert atmosphere generation for cell culture incubators, dry storage cabinets, and sensitive sample preservation.

Agilent MP-AES

Dedicated NGA CASTORE MP-AES model supplies both the high-flow N₂ and dry instrument air required for Agilent's Microwave Plasma Atomic Emission Spectrometers.

3D Laser Printing (SLS/SLM)

CASTORE XL iQ 3D Printing model purges oxygen from build chambers to prevent material oxidation during laser sintering and melting processes. Programmable purge algorithm included.

Central Lab Supply

CASTORE BASIC and PRO models serve as central nitrogen supply points for entire laboratory facilities via distribution manifolds.

Quick Reference

Model comparison

Compare key specifications across the NG Series lineup to identify the ideal generator for your application.

Model Flow Rate (Max) Purity Pressure Technology Air Source
NG EOLO XL 55 L/min99.9999%Inlet – 29 psi (2 bar)PSAExternal
NG EOLO XL 1010 L/min99.9999%Inlet – 29 psi (2 bar)PSAExternal
NG EOLO XL 1616 L/min99.9995%Inlet – 29 psi (2 bar)PSAExternal
NG EOLO XL 1818 L/min99.999%Inlet – 29 psi (2 bar)PSAExternal
ZNG EOLO XL 5 / 10 / 185–18 L/min99.9999% / 99.9995%Inlet – 29 psi (2 bar)PSA + CH4 CatalystExternal
NG SIRIO CD20 L/min99.999%79.8 psi (5.5 bar)PSABuilt-in (×2 piston)
NG SIRIO CD HP20 L/min99.999%101.5 psi (7 bar)PSABuilt-in (×2 piston)
NG RACK 4U C 150150 cc/min>99.9999%79.8 psi (5.5 bar)PSABuilt-in
NG RACK 4U C 500500 cc/min>99.999%58 psi (4 bar)PSABuilt-in
NG RACK 5U 600600 cc/min>99.9999%Up to 116 psi (8 bar)PSAExternal
NG RACK 5U 10001000 cc/min>99.9995%Up to 116 psi (8 bar)PSAExternal
NG RACK 7U 20002000 cc/min>99.9999%Up to 116 psi (8 bar)PSAExternal
NG EOLO 500500 cc/min99.9999%Inlet – 29 psi (2 bar)PSAExternal
NG EOLO 750750 cc/min99.9999%Inlet – 29 psi (2 bar)PSAExternal
NG EOLO 13001300 cc/min99.995%Inlet – 29 psi (2 bar)PSAExternal
NG EOLO 40004000 cc/min99.0%Inlet – 29 psi (2 bar)PSAExternal
NG SIRIO 15001500 cc/min99.9999%79.8 psi (5.5 bar)PSAExternal
NG SIRIO 30003000 cc/min99.9995%79.8 psi (5.5 bar)PSAExternal
NG SIRIO 50005000 cc/min99.99%79.8 psi (5.5 bar)PSAExternal
NG SIRIO 5000 HP5000 cc/min99.999%116 psi (8 bar)PSAExternal
NG SIRIO 80008000 cc/min99.7%79.8 psi (5.5 bar)PSAExternal
NG CASTORE XS iQ 1515 L/minLC-MS Grade116 psi (8 bar)MembraneBuilt-in
NG CASTORE XS iQ 1818 L/minLC-MS Grade116 psi (8 bar)MembraneBuilt-in
NG CASTORE XS iQ 2424 L/minLC-MS Grade116 psi (8 bar)MembraneBuilt-in
NG CASTORE XS iQ 3636 L/minLC-MS Grade116 psi (8 bar)MembraneBuilt-in
NG CASTORE XL iQ 2020 L/minLC-MS Grade + UHP116 psi (8 bar)MembraneBuilt-in
NG CASTORE XL iQ 4040 L/minLC-MS Grade + UHP116 psi (8 bar)MembraneBuilt-in
NG CASTORE XL iQ 5050 L/minLC-MS Grade + UHP116 psi (8 bar)MembraneBuilt-in
NG CASTORE XL iQ 7070 L/minLC-MS Grade + UHP116 psi (8 bar)MembraneBuilt-in
NG CASTORE XL iQ 50 (LCMS)50 L/minLCMS Grade (99.9%)116 psi (8 bar)MembraneBuilt-in
NG CASTORE XL iQ 3D Printing70 L/min<500 ppm O₂ @ 10 L/min130.5 psi (9 bar)MembraneBuilt-in
NGA CASTORE XL iQ 20.40N₂: 20 + Air: 40 L/minLCMS Grade (99.9%)N₂: 130.5 psi (9 bar) · Air: 145 psi (10 bar)MembraneBuilt-in
NGA CASTORE XL iQ 40.40N₂: 40 + Air: 40 L/minLCMS Grade (99.9%)N₂: 130.5 psi (9 bar) · Air: 145 psi (10 bar)MembraneBuilt-in
NGA CASTORE XL iQ 20.60N₂: 20 + Air: 60 L/minLCMS Grade (99.9%)N₂: 130.5 psi (9 bar) · Air: 145 psi (10 bar)MembraneBuilt-in
NGA CASTORE XL iQ MP AESN₂: 40 + Air: 40 L/min<500 ppm O₂ @ 10 L/min116 psi (8 bar) (both)MembraneBuilt-in
NGA CASTORE XL iQ SCIEXN₂: 20 + 2× Air: 30 L/minLCMS Grade (99.9%)N₂: 116 psi (8 bar) · Air: 7+58 psi (4 bar)MembraneBuilt-in
NGA CASTORE XL iQ SCIEX 7500N₂: 32 + 2× Air: 25–26 L/minLCMS Grade (99.9%)N₂: 65.2 psi (4.5 bar) · Air: 105.1 psi (7.2 bar)MembraneBuilt-in
NGA CASTORE XS iQ SHI (Shimadzu)40 L/min combinedLCMS Grade (99.9%)116 psi (8 bar)MembraneBuilt-in
NGA CASTORE XL iQ QSight (PerkinElmer)N₂: 15 + Air: 34–67 L/minLCMS Grade (99.9%)116 psi (8 bar)MembraneBuilt-in
NG CASTORE BASIC 10–6010–60 L/minUp to 99.5%Inlet – 14.5 psi (1 bar)MembraneExternal
NG CASTORE PRO 25–12025–120 L/minUp to 99.5%Inlet – 21.8 psi (1.5 bar)MembraneExternal
NG CASTORE BASIC 350350 L/min96–99.5%Inlet – 14.5 psi (1 bar)MembraneExternal
Common Questions

Nitrogen generator FAQs

How much does a laboratory nitrogen generator cost?
An NG Series nitrogen generator is priced by the purity, flow, and pressure your instruments require. Benchtop units for a single LC-MS or GC typically start in the low five figures; high-flow PSA systems for central lab supply cost more. Because a generator eliminates recurring cylinder rentals, deliveries, and demurrage, most labs reach full ROI within 12–24 months. Request a quote and we'll size the right model and give you a cost comparison against your current cylinder spend.
What nitrogen purity do I need for LC-MS?
Most LC-MS/MS instruments run on 99–99.5% nitrogen for nebulizer, curtain, and drying gas. The NG Series delivers 99.5% up to 99.9999%, and the NGA CASTORE line includes instrument-specific models tuned for SCIEX, Thermo, Agilent, Shimadzu, and Waters platforms — so purity and flow match your mass spectrometer exactly.
Can I match a generator to my specific instrument?
Yes. The NGA CASTORE instrument-specific series is engineered to the exact gas, flow, purity, and pressure of individual LC-MS platforms — plug in and run. For GC-FID, ICP-MS, ELSD, FTIR, and sample evaporation, we size a PSA or membrane model to your method.
Is an on-site nitrogen generator better than cylinders or a dewar?
For most labs, yes. On-site generation removes high-pressure cylinder hazards, eliminates delivery and rental costs, and provides a continuous supply so runs never stop mid-analysis — with constant purity instead of drift as a cylinder empties. See our nitrogen generator vs. cylinders comparison for the full total-cost breakdown.
What flow rate do I need, and how do I size a generator?
Sizing depends on your instruments' combined nitrogen demand (cc/min or L/min) and the pressure they require. The NG Series spans 150 cc/min benchtop units to 350 L/min central systems. Tell us your instruments and we'll calculate the right capacity with headroom for future additions.
Does SLI commission and service NG Series generators nationwide?
Yes. SLI commissions and provides training for laboratories nationwide from our Houston, TX headquarters as an authorized LNI Swissgas distributor.
Ready to Get Started?

Ready to eliminate nitrogen cylinders?

Contact our team to discuss your nitrogen generation requirements. We'll help you select the ideal NG Series model for your laboratory.

Request a Quote → ☎ 281-668-9154
From the Guide Library

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On-Site Nitrogen Generation: Real Benefits for Labs → Nitrogen Generator Service Interval Guidelines → Nitrogen Generator vs Gas Cylinders: True Cost →
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