Gas Chromatography

Verify and optimize gas control in gas chromatography

Accurately flow helium, nitrogen, carbon dioxide, and other carrier gases with a single instrument. Maintain accurate gas chromatograph outputs with stable, repeatable mass flow control.

  • Stable, low-flow control. From zero to full scale within tens of milliseconds.
  • Versatile gas compatibility. One controller can measure 98+ gases and custom gas blends.
  • C1D1 environments. Intrinsically safe instruments for Zone 0 and Zone 1 explosive environments mean you can use Alicat on process analyzer systems in the field.



Mass flow and pressure control enables full system stability

Fluctuations in flow rate disrupt the detection of chemical compounds. Tightly regulate carrier gas flow rate to ensure accurate compound detection.

The role of mass flow in GC’s mobile phase

Gas Chromatology lab

Class 1, Division 1 (Zone 0 or Zone 1) environments

Enhanced insights and control of analyzers in hazardous areas

Alicat’s intrinsically safe instruments provide the same level of fast, accurate, and repeatable results expected from the standard Alicat products, with specifically designed electronics to remove any ignition source. The IS-Max intrinsically safe flow meters and controllers, and IS-Pro intrinsically safe pressure instruments enable data rich monitoring and precise control via analog I/O or digital I/O options from outside a hazardous area.

An intrinsically safe flow controller with valves and gauges typical of a sampling system for oil and gas analysis.

Leak testing and characterizing mission-critical systems

Maintain constant chromatograph pressure using electronic pressure controllers with small footprints and IP67 ratings for washdown environments.

EPC-Series pressure controller

Gas Chromatology pressure controller


CODA Coriolis mass flow controllers precisely control DI water or high pressure gases.

Intrinsically Safe Class 1 Div 1 ATEX Zone 0 mass flow controllers and mass flow meters for explosive environments from Alicat Scientific using laminar DP flow technology to measure flow, pressure, and temperature of gases

Intrinsically safe flow instruments. Gain a richness of variables reporting that’s unmatched in hazardous applications.

Hydrogen mass flow controllers mimic fuel cell behaviors at full scale flow rates up to 10,000 SLPM with quick response and high accuracy.

Dual-valve pressure controllers reach setpoints in milliseconds and maintain control without continuous bleeding.

Key Industry Uses

Enabling digital, automatic gas controls

Connect to FlowVision 2.0™ or directly to LabView for simple control and data monitoring. Alternatively, integrate flow instruments directly into your overall control scheme using serial or industrial communication protocols.

Flow any carrier gas with one device

Easily switch between gases using the front display or a variety of industrial communication protocols.

GC calibration and verification

Extend equipment lifetime by regularly validating processes and calibrating devices.