Dynamic On-site Mixer

Focus on welding, saving money and improving uptime with the Airgas Dynamic On-site Mixer (DOM)—the next-generation on-site mixing unit for delivering premium welding gases with high-mixture accuracy, right on your jobsite.
The Airgas DOM is designed to give you what you need and want—a versatile system for industrial gases and ARCAL™ premium gas mixes.


  • No power supply needed
  • No costly analyzer or on-site calibration
  • No expensive solenoid valves or buffer tank required


  • Blend consistent and accurate mixed gases exceeding AWS/ISO standards at any flow rate*
  • Get reliable liquid supply with world-class logistics


  • Boost efficiency with turnkey solution
  • Increase productivity with a mixing unit that eliminates cylinder management
  • Minimize spatter and weld discontinuity

*ARCAL exceeds AWS 5.32/ISO 14175 standards

Start a conversation about the Airgas DOM today

Call your Airgas account manager orprovide your informationto have an Airgas representative contact you. Ready to talk now? Contact us at800-909-8058.

How is the Airgas DOM different?

The Airgas Dynamic On-site Mixer maintains a mixture accuracy that is unmatched in the on-site gas delivery market—better than ±10% of the minor component in a binary mix. The confidence and assurance of the gas mixture ensures code compliance, reduces costly filler metal waste, avoids rework and saves you time and money on re-inspection, auditing and verification procedures.