Zero Air Generator

Parker Zero Air Generators for Clean, Reliable GC Detector Air

hop ChromGas ZAG zero air generators for hydrocarbon-free air supply, improved detector stability, and efficient day-to-day GC operation

Parker Zero Air Generators

Parker ChromGas ZAG Series zero air generators provide a continuous supply of ultra-high-purity, hydrocarbon-free air for gas chromatography laboratories that need stable detector support and dependable daily performance. Designed for use with an external dry compressed air source, these systems help improve detection limits, reduce baseline noise, and support more consistent signal stability than conventional tank-based air supply methods.

For laboratories using flame ionization detectors (FID) and other combustion-based detectors, clean zero air is essential to analytical sensitivity and reproducibility. By removing hydrocarbons and contaminants from the incoming air stream, Parker ZAG generators help reduce background interference and support more reliable detector response across routine and demanding GC workflows.

The ChromGas ZAG Series is available in multiple flow rate configurations ranging from 1 L/min to 30 L/min, allowing laboratories to size the generator to instrument demand, from smaller single-instrument setups to multi-detector laboratories. Depending on model, the platform can support up to 66 FIDs based on a 450 ccm fuel air rate.

When paired with a Parker ChromGas H2F hydrogen generator, the ZAG Series becomes part of a modular GC gas station that supports FID, FPD, and NPD workflows. The stackable design, digital interface, and simplified monitoring features make these systems well suited for laboratories that want cleaner gas supply, reduced cylinder dependence, and a more organized chromatography workspace.

Parker zero air generators are a strong choice for laboratories prioritizing detector performance, reduced maintenance burden, and long-term operating efficiency. Their modular construction, broad model range, and compatibility with other ChromGas products make them useful for both new system setups and upgrades to existing GC gas infrastructure.

ChromGas ZAG Series Features and Benefits

  • Supplies ultra-high-purity, hydrocarbon-free air for GC detector applications
  • Helps improve detection sensitivity, baseline stability, and analytical reliability
  • Supports FID, FPD, and NPD workflows when integrated into the proper gas supply setup
  • Available in multiple flow rates to match laboratory demand
  • Compact, stackable modular design supports organized lab installation
  • Requires minimal routine operator attention
  • Can integrate with Parker ChromGas hydrogen generators for complete FID gas station configurations
  • Offers a typical two-year payback period in many cylinder replacement scenarios
  • Certified to CSA, UL, CE, and UKCA standards

Principal Specifications

The Parker ZAG Series includes both compact and higher-capacity models to accommodate a wide range of detector counts and laboratory layouts. All models are designed to convert incoming compressed air into cleaner, hydrocarbon-reduced zero air for more stable GC detector support.

Principal Specifications
Model 75-83NA ZAG-3.5LNA ZAG-7LNA ZAG-18LNA ZAG-30LNA
Max. Zero Air Flow Rate 1 L/min 3.5 L/min 7 L/min 18 L/min 30 L/min
Outlet Hydrocarbon Concentration (as methane) < 0.1 ppm < 0.05 ppm < 0.05 ppm < 0.1 ppm < 0.1 ppm
Min./Max. Inlet Air Pressure 40–125 psig (2.8–8.6 bar g)
Max. Inlet Hydrocarbon Concentration (as methane) 100 ppm
Pressure Drop at Max Flow Rate 4 psig (0.3 barg)
Max. Inlet Air Temperature 78°F (25°C)
Inlet/Outlet Ports 1/4″ NPT (female)
Electrical Requirements NA Models: 120V 60Hz, WD Models: 220V 50Hz
Dimensions 12″h × 10″w × 3″d
(30 × 25 × 8 cm)		 17.2″h × 13.5″w × 16″d
(437 × 343 × 407 mm)
Shipping Weight 7 lbs. (3 kg) 41 lbs. (19 kg)

FID Capacity per Model

Selecting the proper zero air generator often depends on the number of detectors being supported. The table below provides a quick reference for typical FID capacity by model based on a 450 ccm fuel air rate.

FID Capacity per Model (Based on 450 ccm Fuel Air Rate)
Number of FIDs Model Number
Up to 2 75-83NA
Up to 8 ZAG-3.5LNA
Up to 16 ZAG-7LNA
Up to 40 ZAG-18LNA
Up to 66 ZAG-30LNA

Maintenance and Installation Kits

Parker zero air generators are supported by maintenance kits and installation accessories that help laboratories simplify setup, protect long-term performance, and keep service planning aligned with instrument usage.

Description Part Number
Maintenance Kit for Model 75-83NA MK7583
12-Month Maintenance Kit for ChromGas Models MKZAG-12M
36-Month Maintenance Kits for ChromGas Models MKZAG-3.5LNA-36M, MKZAG-7LNA-36M, MKZAG-18LNA-36M, MKZAG-30LNA-36M
Installation Kit (All Models) IK76803

Why Zero Air Generators Matter in GC Laboratories

In GC workflows, zero air quality can directly affect detector response, noise levels, and analytical confidence. A properly sized Parker zero air generator helps laboratories maintain cleaner combustion support gas, reduce cylinder logistics, and build a more controlled, modular gas supply system. For laboratories seeking improved detector consistency and long-term operating efficiency, the ChromGas ZAG Series provides a scalable zero air solution across a broad range of instrument demands.

Key Definitions ▸
Zero Air
Highly purified air with extremely low hydrocarbon content, used in gas chromatography to support combustion-based detectors and help reduce background interference.
Zero Air Generator
A system that converts incoming compressed air into cleaner, hydrocarbon-reduced air for detector support, helping laboratories improve gas consistency and reduce dependence on cylinders.
Hydrocarbon Concentration
The amount of hydrocarbon contamination present in the air stream, often measured as methane equivalent. Lower levels help support cleaner detector baselines and improved sensitivity.
FID Capacity
The approximate number of flame ionization detectors a given zero air generator model can support based on the required fuel air flow rate.
Modular Gas Station
A stacked or integrated generator setup that combines zero air, hydrogen, or other gas supply systems to support GC detector operation within a more organized and space-efficient laboratory configuration.
Frequently Asked Questions ▸
What is a zero air generator used for in gas chromatography?
A zero air generator supplies low-hydrocarbon air for combustion-based GC detectors such as FID, FPD, and NPD, helping reduce background noise and support more stable analytical performance.
How does a Parker zero air generator improve GC performance?
Parker zero air generators help remove hydrocarbons and contaminants from the incoming air stream, which can improve baseline stability, detector sensitivity, and response consistency in GC workflows.
How do I choose the right zero air generator model?
The right model depends on total detector air demand, required flow rate, available compressed air supply, and the number of FIDs or other supported detectors in the laboratory setup.
Can a Parker zero air generator be integrated with a hydrogen generator?
Yes. Parker zero air generators can be paired with Parker ChromGas hydrogen generators to create a modular gas station for combustion detector workflows, including FID applications.
Why do laboratories use zero air generators instead of cylinders?
Zero air generators can help reduce cylinder handling, simplify gas supply management, provide a more continuous source of clean detector air, and support a more organized laboratory gas infrastructure.