Parker MIDIGAS Trio Nitrogen (N2) Gas generator for LC/MS, MIDIGAS4NCBLA (Tested)

The Parker MIDIGAS Trio, model MIDIGAS4NCBLA, is a pressure swing adsorption (PSA) nitrogen generator that produces nitrogen from a standard compressed-air supply. It provides a continuous on-demand gas source and offers a safe, reliable, and cost-effective alternative to high-pressure cylinders, liquid nitrogen vessels, and bulk gas storage. Depending on the selected flow rate, the MIDIGAS4 can deliver nitrogen with an equivalent purity of approximately 95% to 99.999%, making it suitable for laboratory installations, including LC/MS applications requiring a stable nitrogen supply.

Key Features

• Produces nitrogen from a standard compressed-air supply
• PSA separation using carbon molecular sieve technology
• Continuous on-demand nitrogen production
• Adjustable balance between nitrogen purity and flow rate
• Equivalent nitrogen purity from approximately 95% to 99.999%
• Built-in oxygen analyzer for continuous purity monitoring
• Automatic economy mode
• Digital and analog outputs for remote monitoring
• Integrated alarm and diagnostic functions
• Modular design supporting multi-bank installations
• Capacity expansion and full standby configurations available
• Compact construction with low routine maintenance requirements
• Carbon molecular sieve service life exceeding ten years when maintained according to Parker recommendations

Technical Specifications

Nitrogen Flow by Purity

• 10 ppm O₂, approximately 99.999% N₂: 1.2 m³/h
• 100 ppm O₂, approximately 99.99% N₂: 2.4 m³/h
• 250 ppm O₂, approximately 99.975% N₂: 3.2 m³/h
• 500 ppm O₂, approximately 99.95% N₂: 3.9 m³/h
• 0.1% O₂, approximately 99.9% N₂: 4.7 m³/h
• 0.5% O₂, approximately 99.5% N₂: 6.9 m³/h
• 1% O₂, approximately 99% N₂: 8.5 m³/h
• 2% O₂, approximately 98% N₂: 11.6 m³/h
• 3% O₂, approximately 97% N₂: 14.3 m³/h
• 4% O₂, approximately 96% N₂: 16.7 m³/h
• 5% O₂, approximately 95% N₂: 18.8 m³/h

Performance values are based on an inlet pressure of 7 bar(g) and an ambient temperature of 20–25 °C.

Pressure and Air Supply

• Compressed-air inlet pressure: 6 to 13 bar(g)
• Typical nitrogen outlet pressure: approximately 5.4 to 6.0 bar(g), depending on purity and flow setting
• Required inlet-air quality: ISO 8573-1:2010 Class 2.2.2
• Required class with high oil-vapor content: 2.2.1

Electrical Requirements

• Supply voltage: 115/230 V AC ±10%
• Frequency: 50/60 Hz
• Power consumption: 80 W
• Fuse: 3.15 A

Port Connections

• Compressed-air inlet: G 1/2"
• N₂ outlet to buffer vessel: G 1/2"
• N₂ inlet from buffer vessel: G 1/2"
• Nitrogen outlet: G 1/2"

Operating Conditions

• Ambient temperature: 5 to 50 °C
• Maximum relative humidity: 80% at temperatures up to 31 °C
• Protection rating: IP20 / NEMA 1
• Maximum operating altitude: 2,000 m
• Noise level: <80 dB(A)

MIDIGAS4 Dimensions and Weight

• Height: 1,034 mm
• Width: 450 mm
• Depth: 640 mm
• Weight: 145 kg

Operating Benefits

• Eliminates routine handling of high-pressure nitrogen cylinders
• Reduces the risk of gas-supply interruption
• Minimizes delivery administration and logistics
• Automatic economy mode reduces energy and compressed-air consumption
• Continuous oxygen monitoring helps maintain the selected gas purity
• Multi-bank installation supports capacity expansion or standby operation
• Modular architecture allows the system to be upgraded as nitrogen demand increases

Typical Applications

• Laboratory nitrogen supply
• LC/MS and other mass spectrometry applications
• Pharmaceutical and chemical laboratories
• Food packaging and blanketing
• Controlled atmospheres for electronics manufacturing
• Electronics soldering
• Fire and explosion prevention through oxygen reduction
• Selective laser sintering
• Process inerting and blanketing

Required nitrogen flow, pressure, and purity should be verified against the specifications of the particular LC/MS instrument before connection.