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LNI Swissgas AirGen Technology

ZA Series
Zero Air Generators

Palladium-catalyst technology delivering hydrocarbon-free zero air for GC-FID, environmental analyzers, and instrument baseline reference. Benchtop, rack-mount, and self-contained compressor models — plus AG OFCAS oil-free air compressors to power any external-air generator. Eliminate cylinders with continuous on-demand generation.

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<0.05 ppm HC Content
30+ Models Available
1.5–220 L Flow Range
101.5 psi (7 bar) Max Pressure
Choose Your Format

Eight product families — zero air & clean air

From ultra-compact benchtop zero air generators to multi-contaminant TOTAL systems and AG OFCAS oil-free compressors to power external-air models — the ZA Series is a complete zero and instrument air solution for any lab configuration.

📐

ZA FID Air

Ultra-compact benchtop zero air generators. External compressed air required. Stackable with HG and NG units.

5 models · 1.5 / 3 / 6 / 15 / 30 L/min
🖥️

ZA RACK FID Air

Standard 19" rack-mount zero air generators. 2U (1.5–6 L/min) and 4U (15–50 L/min) profiles. External air required.

6 models · 1.5 / 3 / 6 / 15 / 30 / 50 L/min
🔌

ZA FID Air C

Integrated oil-free piston compressor — plug in and generate. No compressed air infrastructure needed. 3 models.

3 models · 1.5 / 3 / 6 L/min
🏗️

ZA FID Air C PLUS

High-capacity standalone with integrated compressor. Up to 30 L/min. Large internal tanks for peak demand buffering.

5 models · 1.5 / 3 / 6 / 15 / 30 L/min
⚗️

ZA TOTAL

Multi-contaminant zero air — removes HC, CO, NOx, SO₂, and CO₂. For environmental reference and emission monitoring.

5 models · 1.5 / 3 / 6 / 15 / 30 L/min
🧪

ZA TOTAL C / C HP

Standalone TOTAL purification with integrated compressor. Ultrapure dew points to −70°C. For the most demanding refs.

5 models · 1.5 / 3 / 6 L/min
🔬

ZA FID Air MC

Multi-channel compressor version with up to 2 independent zero air outlets. For dual-instrument or backup-supply labs.

2 models · 1.5 / 3 L/min
⚡

ZA RACK FID Air

Rack-integrated format for instrument bay deployments. Stackable with HG and NG RACK generators for complete gas panels.

2U & 4U · up to 50 L/min
🔧

AG OFCAS Compressors

Oil-free piston and Scroll iQ compressors providing clean compressed air for all external-air ZA generators and NG EOLO nitrogen generators.

6 models · 10–220 L/min · Piston & Scroll
Benchtop · External Compressed Air

ZA FID Air Series

Ultra-compact benchtop zero air generators using palladium-catalyst technology. Removes hydrocarbons to <0.05 ppm from external compressed air. Stackable with HG Hydrogen and NG Nitrogen generators for a complete GC gas panel in one rack column. RS-485 standard.

ZA FID Air 1.5
FID AIR 1.5

ZA FID Air 1.5

1.5 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)27×47×14 cm
  • Weight<8 kg

Single GC-FID instrument supply. Ultra-thin 14 cm profile — slots into any bench. Palladium catalyst oven purification.

ZA FID Air 3.0
FID AIR 3.0

ZA FID Air 3.0

3.0 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)27×47×14 cm
  • Weight<8 kg
ZA FID Air 6.0
FID AIR 6.0

ZA FID Air 6.0

6.0 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)27×47×14 cm
  • Weight<10 kg
ZA FID Air 15.0
FID AIR 15

ZA FID Air 15.0

15.0 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)27×55×15 cm
  • Weight<11 kg

Mid-range flow for multiple GC-FID instruments or high-flow detectors. Larger catalyst bed for sustained high output.

ZA FID Air 30.0
FID AIR 30

ZA FID Air 30.0

30.0 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar)
  • Noise<35 dB(A)
  • Size (W×D×H)27×55×28 cm
  • Weight<17 kg

Highest flow benchtop FID Air model. Ideal for multi-instrument labs or high-demand fuel-air supply applications.

Stackable Design

ZA FID Air units share the same footprint and mounting standard as HG Hydrogen and NG RACK generators — all three can be stacked in a standard 19" instrument bay to form a complete, self-contained GC gas supply panel with zero air, hydrogen, and nitrogen from a single column.

19" Rack-Mount · External Compressed Air

ZA RACK FID Air Series

Standard 19" rack-mount zero air generators for instrument bays. 2U profile for 1.5–6 L/min, 4U profile for 15–50 L/min. Palladium-catalyst purification, RS-485, <0.05 ppm HC. Stackable with HG and NG RACK generators for full gas panel integration.

ZA RACK FID 2U
RACK 2U

ZA RACK FID 2U

1.5 / 3.0 / 6.0 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar) · 94.2 psi (6.5 bar)
  • ProfileStandard 2U · 48 cm deep
  • Weight13 kg
  • Noise<35 dB(A)

Compact 2-unit rack profile for small-flow FID applications. Three flow configurations: 1.5, 3.0, or 6.0 L/min. Fits any 19" instrument cabinet.

ZA RACK FID 4U
RACK 4U

ZA RACK FID 4U

15 / 30 / 50 L/min
  • HC Content<0.05 ppm
  • Pressure (Max)Inlet – 7.2 psi (0.5 bar) · 94.2 psi (6.5 bar)
  • ProfileStandard 4U · 40–65 cm deep
  • Weight18–20 kg
  • Noise<35 dB(A)

High-flow 4U rack model. 50 L/min variant uses 65 cm deep chassis. For multi-instrument labs with multiple GC-FID detectors or high-demand applications.

Integrated Compressor · Plug & Play

ZA FID Air C Series

Self-contained zero air generators with integrated 100% oil-free piston compressor and palladium catalyst oven — simply connect to power and start generating. No external compressed air required. RS-485 and RS-232 standard. Benchtop form factor.

ZA FID Air C 1.5
FID AIR C 1.5

ZA FID Air C 1.5

1.5 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power750 W
  • Size (W×D×H)27×44×41 cm

Truly standalone — plug into wall power and start producing zero air. Built-in oil-free piston compressor. For single GC-FID without compressed air infrastructure.

ZA FID Air C 3.0
FID AIR C 3.0

ZA FID Air C 3.0

3.0 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power750 W
  • Size (W×D×H)27×44×41 cm
ZA FID Air C 6.0
FID AIR C 6.0

ZA FID Air C 6.0

6.0 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power750 W
  • Size (W×D×H)27×44×41 cm

Highest flow C model. Three independent flow configurations from the same chassis. RS-232 for service, RS-485 for lab automation.

High-Capacity Standalone · Integrated Compressor

ZA FID Air C PLUS Series

High-capacity standalone zero air generators with integrated 100% oil-free compressor, internal 10 L air tank, and 5 L buffer tank — designed for continuous 24/7 operation and peak demand buffering. Up to 30 L/min from a single plug-in unit. No external air source needed.

ZA FID Air C PLUS 1.5
C PLUS 1.5

ZA FID Air C PLUS 1.5

1.5 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power1000 W
  • Size (W×D×H)43×75×68 cm
ZA FID Air C PLUS 3.0
C PLUS 3.0

ZA FID Air C PLUS 3.0

3.0 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power1000 W
  • Weight90 kg
ZA FID Air C PLUS 6.0
C PLUS 6.0

ZA FID Air C PLUS 6.0

6.0 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power1000 W
  • Size (W×D×H)43×75×68 cm
ZA FID Air C PLUS 15.0
C PLUS 15

ZA FID Air C PLUS 15.0

15.0 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power1000 W
  • Size (W×D×H)43×75×68 cm
ZA FID Air C PLUS 30.0
C PLUS 30

ZA FID Air C PLUS 30.0

30.0 L/min
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power1000 W
  • Noise<52 dB(A)

Highest-flow C PLUS model — 30 L/min for multi-instrument FID labs or continuous high-demand supply. Internal 10 L + 5 L tanks buffer peak demand.

Multi-Contaminant Purification · External Air

ZA TOTAL Series

The ZA TOTAL goes beyond FID air — it removes not only hydrocarbons, but also CO, NOx, SO₂, and CO₂ for true zero reference air. Essential for environmental monitoring, emissions analyzers, and any instrument measuring trace atmospheric components. Exceptional dew points to −75°C on smaller models.

ZA TOTAL 1500
TOTAL 1500

ZA TOTAL 1500

1.5 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−75°C
  • PressureInlet – 14.5 psi (1 bar)
  • Size (W×D×H)27×48×28 cm

True zero reference air — removes 5 contaminant classes. Exceptional −75°C dew point. RS-485 standard.

ZA TOTAL 3000
TOTAL 3000

ZA TOTAL 3000

3.0 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−75°C
  • PressureInlet – 14.5 psi (1 bar)
  • Size (W×D×H)27×48×28 cm
ZA TOTAL 6000
TOTAL 6000

ZA TOTAL 6000

6.0 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−75°C
  • PressureInlet – 14.5 psi (1 bar)
  • Size (W×D×H)27×48×28 cm
ZA TOTAL 15000
TOTAL 15000

ZA TOTAL 15000

15.0 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−70°C
  • PressureInlet – 14.5 psi (1 bar)
  • Size (W×D×H)27×48×41 cm
ZA TOTAL 30000
TOTAL 30000

ZA TOTAL 30000

30.0 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−70°C
  • PressureInlet – 14.5 psi (1 bar)
  • Size (W×D×H)27×48×41 cm

Highest-flow TOTAL model. Removes HC, CO, NOx, SO₂, and CO₂ at 30 L/min for multi-analyzer environmental monitoring stations.

ZA TOTAL vs. ZA FID Air — What's the difference?

ZA FID Air removes hydrocarbons only (<0.05 ppm HC) — sufficient for GC-FID fuel air. ZA TOTAL additionally removes CO, NOx, SO₂, and CO₂ for true multi-contaminant zero reference air required by environmental monitors, CEMs, and atmospheric analyzers where trace gas background interference must be eliminated.

Multi-Contaminant · Integrated Compressor

ZA TOTAL C & TOTAL C HP Series

Self-contained multi-contaminant zero air generators — full TOTAL purification (HC, CO, NOx, SO₂, CO₂) with integrated oil-free compressor. No external air needed. The HP variant achieves an exceptional −70°C dew point and <0.1 ppm CO₂ for the most demanding reference applications.

ZA TOTAL C 1.5
TOTAL C 1.5

ZA TOTAL C 1.5

1.5 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−60°C
  • Pressure (Max)87 psi (6 bar)
  • Power1000 W · 90 kg

Standalone TOTAL purification with built-in compressor. Plug in, power on, generate certified reference air. RS-485, RS-232, optional alarm contact.

ZA TOTAL C 3.0
TOTAL C 3.0

ZA TOTAL C 3.0

3.0 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−60°C
  • Pressure (Max)87 psi (6 bar)
  • Size (W×D×H)43×75×68 cm
ZA TOTAL C 6.0
TOTAL C 6.0

ZA TOTAL C 6.0

6.0 L/min
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<5 ppm
  • Dew Point<−60°C
  • Pressure (Max)87 psi (6 bar)
  • Size (W×D×H)43×75×68 cm
ZA TOTAL C HP 1.5
TOTAL C HP 1.5

ZA TOTAL C HP 1.5

1.5 L/min · Ultra-pure
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<0.1 ppm
  • Dew Point<−70°C
  • Pressure (Max)87 psi (6 bar)
  • Power1000 W · 95 kg

Highest-purity ZA model. CO₂ removal to <0.1 ppm (vs 5 ppm for standard TOTAL C) and dew point to −70°C. For NIST-traceable calibration references and regulatory monitoring.

ZA TOTAL C HP 3.0
TOTAL C HP 3.0

ZA TOTAL C HP 3.0

3.0 L/min · Ultra-pure
  • HC / CO / NOx / SO₂<0.05 ppm
  • CO₂<0.1 ppm
  • Dew Point<−70°C
  • Pressure (Max)87 psi (6 bar)
  • Size (W×D×H)43×75×68 cm
Multi-Channel Compressor Models

ZA FID Air MC Series

Multi-channel zero air generators with integrated compressor — providing two independent, regulated zero air outlets from a single unit. Ideal for dual-instrument labs, redundant supply, or locations requiring independent flow/pressure for two separate GC-FID systems.

ZA FID Air MC 1.5
FID AIR MC 1.5

ZA FID Air MC 1.5

1.5 L/min (×2 channels)
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power750 W
  • Size (W×D×H)27×44×41 cm

Two independently regulated zero air outlets. RS-485 and RS-232. Palladium catalyst. Oil-free compressor. For dual GC-FID setups from a single generator.

ZA FID Air MC 3.0
FID AIR MC 3.0

ZA FID Air MC 3.0

3.0 L/min (×2 channels)
  • HC Content<0.05 ppm
  • Pressure29-101.5 psi (2-7 bar)
  • Dew Point<−30°C
  • Power750 W · 35 kg
  • Size (W×D×H)27×44×41 cm

Higher flow dual-channel variant. Two 3 L/min outputs independently regulated. Compact same footprint as FID Air C series.

Technology

Why choose ZA Series

🔥

Palladium Catalyst

Catalytic oxidation using a palladium-filled oven converts hydrocarbon contaminants to water and CO₂, then removes them — achieving <0.05 ppm THC reliably across the full flow range.

💧

Molecular Sieve Drying

Multi-stage drying with molecular sieves and cooling coils achieve atmospheric dew points as low as −75°C — ensuring baseline stability for sensitive humidity-affected detectors.

🔌

Integrated Compressor

C, C PLUS, TOTAL C, and TOTAL C HP models include built-in 100% oil-free piston compressors — completely standalone with no compressed air infrastructure required.

🔗

Stackable Design

ZA FID Air and RACK series share the same footprint and rack standard as HG and NG generators — stack all three into a single instrument bay for a complete GC gas supply panel.

📡

RS-485 Standard

All models include RS-485 for lab automation and remote monitoring. C-series models add RS-232 for service. Optional alarm contacts available on TOTAL C series.

♻️

Eliminate Cylinders

Permanent, continuous on-demand zero air at a fraction of cylinder cost. Eliminate cylinder rentals, deliveries, regulator changes, and handling risks in your lab.

Applications

Proven performance across
analytical disciplines

From routine GC-FID flame air to regulatory-grade environmental reference standards, ZA Series generators deliver certified zero air performance for the full spectrum of analytical needs.

GC-FID Fuel Air

Primary application — oxidant gas for Flame Ionization Detectors. Zero HC background ensures detector sensitivity and baseline stability for accurate quantitation.

Environmental Monitoring

Zero reference gas for continuous emissions monitors (CEMs) and ambient air analyzers measuring VOCs, CO, NOx, SO₂, and ozone. ZA TOTAL removes all interferents.

Instrument Zero Calibration

Zero reference standard for span/zero calibration routines on any instrument measuring hydrocarbon or trace gas concentrations. Traceable to known zero baseline.

GC-ECD / GC-PID

Clean, dry carrier and make-up gas for Electron Capture and Photoionization Detectors. Hydrocarbon-free ensures no background interference with electron-sensitive detectors.

TOC Analyzers

Hydrocarbon-free purge gas for Total Organic Carbon analyzers. Zero air eliminates atmospheric HC background that would inflate TOC readings.

FTIR Purge Gas

CO₂ and hydrocarbon-free purge for FTIR instrument optical paths. ZA TOTAL removes both HC and CO₂, eliminating absorption bands that interfere with spectra.

Ambient Air Monitors

Zero air background for ozone, NOx, SO₂, and CO ambient monitoring stations. Regulatory-compliant zero reference for EPA Method reference equivalency programs.

Combustion Analysis

Clean oxidant gas for combustion testing and calorimetry. Hydrocarbon-free air eliminates HC contribution to combustion analysis results.

Semiconductor / Cleanroom

Ultra-pure process air for cleanroom environments, wafer processing, and semiconductor manufacturing where trace HC contamination is critical.

Calibration Gas Dilution

Diluent gas for preparing calibration standards by dynamic dilution of certified reference gas mixtures to required concentration levels.

Quick Reference

Model comparison

Compare key specifications across the ZA Series lineup to select the ideal zero air generator for your application and infrastructure.

Model Flow Rate HC Content Dew Point Air Source CO₂ Removal
ZA FID Air 1.51.5 L/min<0.05 ppm<−35°CExternalNo
ZA FID Air 3.03.0 L/min<0.05 ppm<−35°CExternalNo
ZA FID Air 6.06.0 L/min<0.05 ppm<−35°CExternalNo
ZA FID Air 15.015.0 L/min<0.05 ppm<−35°CExternalNo
ZA FID Air 30.030.0 L/min<0.05 ppm<−35°CExternalNo
ZA RACK FID 2U (1.5–6)1.5–6.0 L/min<0.05 ppm<−35°CExternalNo
ZA RACK FID 4U (15–50)15–50 L/min<0.05 ppm<−35°CExternalNo
ZA FID Air C 1.51.5 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C 3.03.0 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C 6.06.0 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C PLUS 1.51.5 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C PLUS 3.03.0 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C PLUS 6.06.0 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C PLUS 15.015.0 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air C PLUS 30.030.0 L/min<0.05 ppm<−30°CBuilt-inNo
ZA FID Air MC 1.51.5 L/min ×2<0.05 ppm<−30°CBuilt-inNo
ZA FID Air MC 3.03.0 L/min ×2<0.05 ppm<−30°CBuilt-inNo
ZA TOTAL 15001.5 L/min<0.05 ppm<−75°CExternal<5 ppm
ZA TOTAL 30003.0 L/min<0.05 ppm<−75°CExternal<5 ppm
ZA TOTAL 60006.0 L/min<0.05 ppm<−75°CExternal<5 ppm
ZA TOTAL 1500015.0 L/min<0.05 ppm<−70°CExternal<5 ppm
ZA TOTAL 3000030.0 L/min<0.05 ppm<−70°CExternal<5 ppm
ZA TOTAL C 1.51.5 L/min<0.05 ppm<−60°CBuilt-in<5 ppm
ZA TOTAL C 3.03.0 L/min<0.05 ppm<−60°CBuilt-in<5 ppm
ZA TOTAL C 6.06.0 L/min<0.05 ppm<−60°CBuilt-in<5 ppm
ZA TOTAL C HP 1.51.5 L/min<0.05 ppm<−70°CBuilt-in<0.1 ppm
ZA TOTAL C HP 3.03.0 L/min<0.05 ppm<−70°CBuilt-in<0.1 ppm
AG OFCAS Compressor Reference
Model Air Flow (Max) Max Pressure Dew Point Noise Form Factor Tank
AG OFCAS 3535 L/min @ 101.5 psi (7 bar)123.2 psi (8.5 bar)<−20°C58 dB(A)Benchtop · 27×44×41 cm4 L
AG OFCAS 35 PLUS35 L/min @ 101.5 psi (7 bar)—<−20°C<52 dB(A)Floor · 43×75×68 cm10 L
AG OFCAS 4040 L/min @ 101.5 psi (7 bar)145 psi (10 bar)<−20°C57 dB(A)Benchtop · 27×51×51 cm5 L
AG OFCAS 6060 L/min @ 101.5 psi (7 bar)—<−20°C<58 dB(A)Floor · 44×76×68 cm2×10 L
AG OFCAS 10 RACK 4U10 L/min @ 43.5 psi (3 bar)101.5 psi (7 bar)<−10°C55 dB(A)19" 4U · 48 cm deep2 L
AG OFCAS 40 RACK 6U40 L/min @ 87 psi (6 bar)116 psi (8 bar)<−20°C65 dB(A)19" 6U · 41 cm deep4 L
AG OFCAS Scroll iQ 220 8220 L/min (190 @ 116 psi (8 bar))116 psi (8 bar)<−20°C (with dryer)<50 dB(A)Floor · 59×92×73 cm—
AG OFCAS Scroll iQ 220 8 BASIC220 L/min (220 @ 116 psi (8 bar))116 psi (8 bar)No dryer<52 dB(A)Floor · 59×92×73 cm—
AG OFCAS Scroll iQ 200 10200 L/min (170 @ 145 psi (10 bar))145 psi (10 bar)<−20°C (with dryer)<52 dB(A)Floor · 59×92×73 cm—
AG OFCAS Scroll iQ 200 10 BASIC200 L/min (200 @ 145 psi (10 bar))145 psi (10 bar)No dryer<52 dB(A)Floor · 59×92×73 cm—
AG OFCAS · AirGen Compressed Air

AG OFCAS — Laboratory Air Compressors

The AG OFCAS series provides the clean, dry compressed air source required by all external-air ZA FID, ZA TOTAL, and NG EOLO generators. Oil-free piston and scroll compressor technology, automatic water purge, and electronic pressure control — purpose-built for continuous laboratory use. Choose from benchtop piston models (35–60 L/min), 19" rack-mount profiles, or high-capacity Scroll iQ units (up to 220 L/min) for LCMS infrastructure.

Piston Compressors — Benchtop & Cabinet
AG OFCAS 35
OFCAS 35

AG OFCAS 35

35 L/min @ 101.5 psi (7 bar)
  • Air Delivery35 L/min @ 101.5 psi (7 bar)
  • Working Pressure6–123.2 psi (8.5 bar)
  • Dew Point<−20°C
  • Noise58 dB(A)
  • Tank4 L internal
  • Power750 W · 35 kg
  • Size (W×D×H)27×44×41 cm

Compact benchtop piston compressor. Direct replacement air source for ZA FID Air and ZA TOTAL external-air models, and NG EOLO. Optional soundproof box accessory available. Electronic pressure control with set-point hysteresis.

AG OFCAS 35 PLUS
OFCAS 35 PLUS

AG OFCAS 35 PLUS

35 L/min @ 101.5 psi (7 bar)
  • Air Delivery35 L/min @ 101.5 psi (7 bar)
  • Dew Point<−20°C
  • Noise<52 dB(A)
  • Tank10 L internal
  • Power750 W · 90 kg
  • Size (W×D×H)43×75×68 cm

Quieter floor-standing variant with 10 L internal tank (vs 4 L on the 35) for smoother pressure delivery. 6 dB quieter than OFCAS 35 at <52 dB(A). Full-range 110/240 VAC model available. ¼" BSPP outlet.

OFCAS 40

AG OFCAS 40

40 L/min @ 101.5 psi (7 bar)
  • Air Delivery40 L/min @ 101.5 psi (7 bar)
  • Pressure (Max)145 psi (10 bar)
  • Dew Point<−20°C
  • Noise57 dB(A)
  • Tank5 L internal
  • Power750 W · 40 kg
  • Size (W×D×H)27×51×51 cm

Higher flow benchtop piston compressor with 145 psi (10 bar) max pressure capability. Slightly squarer footprint than the OFCAS 35 for larger instrument bench deployments. 110 VAC model available.

OFCAS 60

AG OFCAS 60

60 L/min @ 101.5 psi (7 bar)
  • Air Delivery60 L/min @ 101.5 psi (7 bar)
  • Dew Point<−20°C
  • Noise<58 dB(A)
  • Tank2×10 L (total 20 L)
  • Power1.5 kW · 115 kg
  • Size (W×D×H)44×76×68 cm

Highest-flow piston model — dual-compressor design with two 10 L internal tanks (total 20 L) for continuous high-demand supply. Ideal for large ZA FID Air and NG EOLO installations with multiple instruments. 110 VAC model available.

Rack-Mount Compressors — 19" Integration
AG OFCAS 10 RACK 4U
RACK 4U · 10 L/min

AG OFCAS 10 RACK 4U

10 L/min @ 43.5 psi (3 bar)
  • Air Flow10 L/min @ 43.5 psi (3 bar)
  • Pressure (Max)101.5 psi (7 bar)
  • Dew Point<−10°C
  • Noise55 dB(A)
  • Power250 W · 25 kg
  • Profile19" 4U · 48 cm deep

Compact 4U rack compressor for instrument bay integration alongside ZA RACK FID generators. Low 250 W power draw. Stackable with HG and NG RACK generators for complete gas panel solutions.

AG OFCAS 40 RACK 6U
RACK 6U · 40 L/min

AG OFCAS 40 RACK 6U

40 L/min @ 87 psi (6 bar)
  • Air Flow40 L/min @ 87 psi (6 bar)
  • Pressure (Max)116 psi (8 bar)
  • Dew Point<−20°C
  • Noise65 dB(A)
  • Power750 W · 35 kg
  • Profile19" 6U · 41 cm deep

High-flow 6U rack compressor. Powers ZA RACK FID 4U (15–50 L/min) and NG SIRIO generators from the same instrument cabinet. Full-range 110/240 VAC model available.

AG OFCAS Scroll iQ — High-Capacity LCMS Infrastructure
AG OFCAS Scroll iQ 220 8
Scroll iQ 220 · 116 psi (8 bar)

AG OFCAS iQ 220 8

220 L/min @ 116 psi (8 bar)
  • Free Air Delivery220 L/min
  • Max Pressure116 psi (8 bar)
  • Dew Point<−20°C (with dryer)
  • Noise<50 dB(A)
  • Power2.2 kW · 150 kg
  • Size (W×D×H)59×92×73 cm

Scroll technology delivers ultra-quiet operation at <50 dB(A) — the quietest OFCAS compressor. For NG CASTORE membrane and NG POLLUCE PSA nitrogen generators in LC/MS labs. Touchscreen LCD, RS-485, RS-232, Digital I/O. Energy-saving algorithm. PID pressure, ON/OFF, and normal logic operating modes. Parallel connection available for redundancy.

AG OFCAS Scroll iQ 220 8 BASIC
Scroll iQ 220 · BASIC

AG OFCAS iQ 220 8 BASIC

220 L/min @ 116 psi (8 bar) · No dryer
  • Free Air Delivery220 L/min
  • Max Pressure116 psi (8 bar)
  • Dew PointNo integrated dryer
  • Noise<52 dB(A)
  • Power2.2 kW · 140 kg
  • Size (W×D×H)59×92×73 cm

BASIC variant without integrated dryer — for use with an external dryer or where inlet air is already dry. Lighter (140 kg vs 150 kg) and slightly lower noise at <52 dB(A).

AG OFCAS Scroll iQ 200 10
Scroll iQ 200 · 145 psi (10 bar)

AG OFCAS iQ 200 10

200 L/min @ 145 psi (10 bar)
  • Free Air Delivery200 L/min
  • Max Pressure145 psi (10 bar)
  • Dew Point<−20°C (with dryer)
  • Noise<52 dB(A)
  • Power2.5 kW · 150 kg
  • Size (W×D×H)59×92×73 cm

Higher pressure 145 psi (10 bar) variant for generators requiring elevated inlet pressure. Ideal for NG CASTORE with elevated nitrogen outlet pressure requirements. BASIC version also available.

AG OFCAS Scroll iQ Full Range
Scroll iQ · Full Range

AG OFCAS iQ Full Range (115–240 VAC)

180–200 L/min · 8 or 145 psi (10 bar)
  • Free Air Delivery180–200 L/min
  • Max Pressure8 or 145 psi (10 bar)
  • Dew Point<−20°C (with dryer)
  • Power1.8–2.0 kW
  • Power Supply115–240 VAC Full Range
  • Size (W×D×H)59×92×73 cm

Full-range power supply variants (115–240 VAC) — 200 8, 200 8 BASIC, 180 10, and 180 10 BASIC — for international deployments or mixed-voltage lab environments. BASIC variants omit the integrated dryer.

Which OFCAS compressor do I need?

Match the compressor output to your generator's air inlet requirement. ZA FID Air / ZA TOTAL (external air): OFCAS 35 or 35 PLUS for 1–3 generators; OFCAS 40 or 60 for higher combined flow. ZA RACK FID: OFCAS RACK 4U (10 L/min) or 6U (40 L/min) for clean in-rack integration. NG CASTORE (membrane N₂): OFCAS Scroll iQ 220 or 200 series for the high flow rates membrane generators require. The Scroll iQ is also the quietest option at <50 dB(A).

Ready to Get Started?

Ready to eliminate zero air cylinders?

Contact our team to discuss your zero air requirements. We'll help you select the ideal ZA Series model — whether you need a simple benchtop FID air supply or a multi-contaminant total zero air system for environmental monitoring.

Request a Quote → ☎ 281-668-9154