Executive Summary
Persistent helium supply constraints and rising costs continue to challenge analytical laboratories worldwide. As a result, many laboratories are evaluating on-site hydrogen generation as an alternative carrier gas strategy for gas chromatography (GC) applications.
Key considerations include:
- Improved supply resilience through on-site gas production.
- Potential operating cost reductions compared with cylinder-based helium supply.
- Advances in hydrogen generator technology that support high-purity gas production for many GC applications.
- Growing interest in sustainability initiatives that reduce dependence on delivered gas cylinders.
While hydrogen is not suitable for every application, many laboratories have successfully implemented hydrogen-based workflows following appropriate method validation and risk assessment.
The Business Case for On-Site Gas Generation
For many laboratories, helium procurement has become increasingly difficult to forecast due to ongoing supply disruptions and regional shortages. Recent market events have highlighted the vulnerability of laboratories that rely exclusively on delivered gas cylinders.
In contrast, on-site hydrogen generation allows laboratories to produce carrier gas at the point of use, reducing dependence on external suppliers and transportation networks.
When evaluating the economics of hydrogen generation, laboratory managers should consider several factors:
Direct Gas Costs
Helium prices have increased significantly in recent years, although increases vary by region, supplier, and contract structure. Laboratories should compare their actual annual helium expenditures with the operating costs of a hydrogen generator, including electricity, water, and maintenance.
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Cylinder-Related Expenses
The total cost of a cylinder-based supply model often extends beyond the gas itself. Additional expenses may include:
- Cylinder rental fees
- Hazardous materials surcharges
- Delivery charges
- Emergency replacement fees
- Administrative and inventory management costs
These costs can represent a meaningful portion of overall gas expenditures.
Cost of Downtime
Unplanned interruptions in gas supply can delay sample analysis, affect laboratory productivity, and increase project costs. Laboratories operating multiple GC systems or supporting time-sensitive testing programs may find that supply continuity carries substantial operational value.
Depending on local helium costs, instrument utilization rates, and generator specifications, some laboratories report payback periods of less than two years. However, ROI calculations should be based on facility-specific data rather than industry averages.
Technical Performance Considerations
Cost savings alone rarely justify a carrier gas transition. Analytical performance remains the primary consideration for most laboratories.
Modern proton exchange membrane (PEM) hydrogen generators can produce high-purity hydrogen suitable for many GC applications. Commercial systems commonly provide hydrogen purity levels up to 99.9999%, although specifications vary by manufacturer and model.
Potential advantages include:
Consistent Gas Quality
Unlike cylinders, which may exhibit pressure variations and require periodic replacement, generators provide a continuous gas supply under stable operating conditions.
High Flow Capacity
Many current systems can support multiple GC instruments simultaneously, depending on total laboratory demand and generator capacity.
Established GC Compatibility
Hydrogen has long been used as a carrier gas and detector fuel in gas chromatography. Numerous studies have demonstrated comparable or improved chromatographic efficiency for many applications due to hydrogen's favorable diffusion characteristics.
However, laboratories using GC-MS systems should recognize that method translation and validation may be required. Hydrogen can influence ionization chemistry and fragmentation patterns for certain compounds, making application-specific evaluation essential before implementation.
Safety Considerations
Hydrogen remains a flammable gas and requires appropriate safety controls. However, modern generator systems incorporate several features designed to reduce risk.
These may include:
- Automatic leak detection
- Pressure monitoring
- Automatic shutdown systems
- Low internal gas storage volumes
- Continuous diagnostic monitoring
Compared with high-pressure cylinders, on-site generators typically store significantly smaller quantities of hydrogen at any given time.
Laboratories considering hydrogen adoption should conduct a formal risk assessment and ensure compliance with applicable safety standards, ventilation requirements, and manufacturer recommendations.
Sustainability Considerations
Sustainability goals are increasingly influencing laboratory purchasing decisions.
Helium is a finite resource recovered primarily as a byproduct of natural gas extraction. By contrast, hydrogen generators produce gas on demand, eliminating many transportation and distribution requirements associated with delivered cylinders.
Potential sustainability benefits include:
- Reduced cylinder transportation requirements
- Lower packaging and logistics demands
- Reduced handling and storage requirements
- Alignment with broader laboratory efficiency initiatives
The overall environmental impact of hydrogen generation depends partly on the electricity source used to power the system.
Strategic Recommendations
Laboratories considering a transition to hydrogen should develop a structured evaluation plan.
1. Establish Current Gas Costs
Review at least 12 months of helium expenditures, including cylinder rental, delivery fees, and emergency charges.
2. Assess Operational Risk
Document any historical supply disruptions and estimate their impact on productivity, turnaround times, or revenue generation.
3. Validate Analytical Methods
Evaluate method suitability, particularly for GC-MS applications, before implementing a laboratory-wide transition.
4. Develop a Total Cost of Ownership Model
Compare generator acquisition costs, maintenance requirements, operating expenses, and projected helium expenditures over multiple years.
Conclusion
The decision to transition from helium to hydrogen extends beyond gas pricing alone. Supply resilience, laboratory productivity, sustainability objectives, and analytical requirements all influence the business case.
For many laboratories, on-site hydrogen generation represents a viable strategy for reducing dependence on volatile helium supply chains. However, successful implementation requires careful method validation, appropriate safety planning, and a thorough financial assessment based on facility-specific operating conditions.
References
- Agilent Technologies. EI GC/MS Instrument Helium to Hydrogen Carrier Gas Conversion User Guide. Agilent Technologies. Available at: https://www.agilent.com/cs/library/usermanuals/public/user-guide-coverting-ei-gcms-instruments-5994-2312en-agilent.pdf. Accessed June 2026.
- Restek Corporation. Benefits and Considerations of Converting to Hydrogen Carrier Gas. Available at: https://discover.restek.com/articles/pctj1729/benefits-and-considerations-of-converting-to-hydrogen-carrier-gas. Accessed June 2026.
- Thermo Fisher Scientific. Using Hydrogen as a Carrier Gas With GC and GC-MS: Be Safe and Efficient. Available at: https://www.thermofisher.com/blog/analyteguru/using-hydrogen-as-a-carrier-gas-with-gc-and-gc-ms-be-safe-and-efficient/. Accessed June 2026.
- Shimadzu Corporation. Alternative GCMS Carrier Gas. Available at: https://www.shimadzu.com/an/service-support/technical-support/technical-information/gas-chromatograph-mass-spectrometry/alternative_carrier_gas/index.html. Accessed June 2026.
- Kaczmarski M, et al. Hydrogen vs. Helium as Carrier Gases in GC-MS/MS for Pesticide Residue Analysis. Journal of Agriculture and Food Research. 2025. Available via ScienceDirect.
- Peak Scientific. Hydrogen Gas Generators for Gas Chromatography Applications. Available at: https://www.peakscientific.com/products/hydrogen/. Accessed June 2026.
- Peak Scientific. Hydrogen Generator Safety for Standard and Trace Analysis. Available at: https://theanalyticalscientist.com/media/nwid5ems/peak-app-note-hydrogen_generator_safety.pdf. Accessed June 2026.
- Peak Scientific. How Is Hydrogen in Peak’s Hydrogen Generators Purified? Available at: https://peakscientific.zendesk.com/hc/en-us/articles/360001596958-How-is-hydrogen-in-Peak-s-hydrogen-generators-purified. Accessed June 2026.
- LCGC International. Hydrogen as a Carrier Gas for GC and GC-MS. Available at: https://www.chromatographyonline.com/view/hydrogen-carrier-gas-gc-and-gc-ms. Accessed June 2026.
- Agilent Technologies. Conserve Helium, Convert to Alternative Carrier Gas FAQ. Available at: https://www.agilent.com/en/product/gas-chromatography/gc-systems/conserve-helium-alternative-carrier-gas-faq. Accessed June 2026.
- Agilent Technologies. Switch to Hydrogen or Nitrogen as Alternative Carrier Gas. Available at: https://www.agilent.com/en/product/gas-chromatography/gc-systems/convert-alternative-carrier-gas-hydrogen-nitrogen-gc-gcms. Accessed June 2026.
- Axios. Iran Conflict Disrupts Qatar Helium Production and Global Supply Chains. April 2026. Available at: https://www.axios.com/2026/04/07/iran-war-qatar-helium-production. Accessed June 2026. This source supports discussion of recent helium supply instability but should not be used to support specific pricing claims.
- Separation Science. Switching Carrier Gases in GC and GC-MS: What Labs Need to Know. 2026. Available at: https://www.sepscience.com/switching-carrier-gases-in-gc-and-gc-ms-what-labs-need-to-know-12385. Accessed June 2026.
