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Gas Quality Monitoring

Biogas & Gas Quality Monitoring

Comprehensive biogas testing and gas composition analysis to support anaerobic digestion efficiency, permit compliance, and gas utilisation decisions.

Biogas Monitoring & Sampling

We provide specialist biogas monitoring and sampling services across anaerobic digestion plants, landfill gas systems, and gas upgrade facilities — delivering the data you need to optimise performance and demonstrate compliance.

Biogas composition analysis

Measurement of methane, carbon dioxide, oxygen, hydrogen sulphide and trace contaminants to characterise gas quality and inform process decisions.

Landfill gas monitoring

Systematic sampling and analysis of landfill gas at extraction wells, headers, and the gas engine — supporting permit compliance and optimisation.

AD plant performance monitoring

Regular monitoring programmes for anaerobic digestion operators to track gas yield, quality, and system performance over time.

Biomethane & grid injection

Gas quality testing to support biomethane upgrading and grid injection projects, including compliance with gas quality standards.

Trace contaminant analysis

Identification and quantification of siloxanes, VOCs, and other trace contaminants that can affect engine performance and gas utilisation.

Permit compliance reporting

Monitoring reports prepared to meet Environment Agency permit conditions and voluntary standards, including MCERTS requirements.

Specialist knowledge, accurate data

Biogas monitoring requires specialist knowledge of the processes involved. Our team combines technical expertise with a quality management framework that gives operators confidence in their data.

01

Process understanding

We understand anaerobic digestion and landfill gas systems — not just the monitoring techniques. This means better designed programmes and more useful data.

02

Quality assured

All monitoring follows a certified quality management system — consistent, auditable, and defensible results every time.

03

Methodology development

Where standard methods don't cover your specific requirements, we develop and validate bespoke approaches.

04

Flexible service

From one-off surveys to ongoing monitoring programmes — we work around your operational schedule and reporting deadlines.

Siloxanes & CHP Engine Protection

Siloxanes are organosilicon compounds found in biogas from anaerobic digestion of sewage sludge, municipal solid waste, and food waste. Left undetected, they cause progressive and costly damage to combined heat and power (CHP) engines.

How siloxanes damage CHP engines

When biogas containing siloxanes is combusted in a CHP engine, the siloxanes oxidise and form silicon dioxide (SiO₂) — essentially glass. This hard, abrasive deposit builds up on pistons, cylinder liners, valves, and spark plugs. The result is accelerated wear, loss of compression, increased maintenance intervals, and in severe cases, catastrophic engine failure. Even low concentrations (<5 mg/m³) can cause measurable degradation over time.

Our siloxane sampling service

We provide representative siloxane sampling of biogas at anaerobic digestion plants, sewage treatment works, and landfill gas sites. Samples are collected using validated methods and analysed by accredited laboratories to quantify total and individual siloxane species (L2, L3, L4, D3, D4, D5, D6). Results are provided with a clear interpretation of risk to your engine and recommendations for mitigation — including filtration system sizing where required.

  • Sampling at gas engine inlet, post-upgrade, or at multiple points for mass balance
  • Individual siloxane speciation (cyclic and linear)
  • Comparison against engine manufacturer limits
  • Filtration performance assessment and optimisation

Who we work with

Anaerobic digestion operators
Landfill gas operators
Energy from waste
Agricultural AD plants
Sewage treatment works
Gas upgrade facilities

Need biogas monitoring?

Get in touch for a no-obligation quote. We respond within one business day.