Identify the Flammable Properties of Your Gases, Vapours & Liquids in 7-10 Days
91% Rated Excellent Turnaround
90% Rated Excellent Response to Contact
83% Rated Excellent for Report Content
Make data driven decisions that support compliance
Sigma-HSE will provide peer reviewed and regulation-ready gas, vapour & liquid test data formatted for direct use in both national and international compliance frameworks.
- Regulatory Compliance: swiftly close out DSEAR/ATEX recommendations to ensure complete regulatory compliance.
- Minimise Liability: by using and implementing our documented testing data, you can establish a clear chain of evidence for due diligence.
- Strengthen Policies: integrate verifiable material insights into your hazard profile and Major Accident Prevention Policy (MAPP).
Sigma-HSE combines decades of gas, vapour & liquid testing experience with process safety risk assessment solutions, to provide lasting support for you and your business.
Strengthen your hazard controls with a complete ‘Basis of Safety’
Sigma-HSE’s gas, vapour & liquid testing solutions provide the data you need to take control of your process safety. We’ve simplified your safety by breaking down our approach into three core areas.
- Avoidance of Ignition Sources: we’ll help determine whether your heated surfaces, electrical equipment, and human actions (like hot work) do not become an effective ignition source.
- Explosion Prevention: the flammable limits of your materials can be tested to accurately determine if your alarms and detection systems are correct.
- Explosion Protection: use our data as the cornerstone of your explosion protection strategy by determining where ATEX rated equipment will be needed.
Based on the three above groups Sigma-HSE can create tailored testing packages to address each ‘Basis of Safety’ for your operations.
Tailored testing support that simplifies your process workflow
Sigma-HSE simplifies gas, vapour & liquid testing for the process industries by offering practical, expert-led support that fit seamlessly with your operations.
- Get a quote in days: waiting weeks to receive a quote isn’t sustainable for you, your project, or your business. Get in touch and we’ll issue a bespoke quote in days.
- Lifetime guidance: from your preliminary questions to the application of your report, you will receive expert guidance throughout and beyond your project lifecycle.
- Bespoke-quotations: your gas & vapour testing requirements are unique to you. We’ll take the time to understand your testing requirements and will never generate a blanket quote.
Sigma-HSE combines decades of expert insights with tailored testing solutions, to provide lasting support for you and your processes.
Understand the flammable nature of your gases, vapours & liquids in 3 simple steps
Obtaining and integrating flammable gas, vapour & liquid testing data into your process has never been so easy.
Step 1: Contact Us
Step 2: Prepare & Ship
Step 3: Your Report
Trusted by Over +1000 Businesses
Fast, reliable and reproducible gas, vapour & liquid data that you can count on
Gather data to correctly identify and mitigate processes hazards without having to wait months for
results or without having to pay tiered premiums.
Fastest UK Turnaround
Rigorous QMS Data
Transparent Pricing
‘Basis of Safety’ Support
Discover Our Range Flammable Gas, Vapour & Liquid Tests
Flashpoint
Flammable Limits (UEL/LEL)
Auto Ignition Temperature (AIT)
Get in Touch to Find out how Sigma-HSE
can help you prevent fire and explosion incidents
We’ll be your guide throughout your testing journey.
Manufacturing Brand Supported Through Bespoke Hybrid Gas and MIE Testing
"I would like to highlight the prompt and professional response to our testing enquiry, the quick turnaround time for the tests and report was unrivalled."
"Excellent service – clear quotation, helpful discussion regarding samples on delivery and rapid turn-round."
Protect your employees.
Satisfy the regulators.
Drive product growth.
Start your flammable gas, vapour and liquid testing journey with Sigma-HSE
Testing solutions for every industry
Learn more about our Industrial Explosion Hazards Solutions
Frequently asked questions
What is gas and vapour flammability testing, and why is it important?
Gas and vapour flammability testing determines the key fire and explosion properties of your materials, including flashpoint, flammable limits (UEL/LEL), and auto-ignition temperature.
This data is critical for understanding how your materials behave under real process conditions, allowing you to design safe systems, set accurate alarm thresholds, and select the correct ATEX-rated equipment.
Without tested data, businesses risk over or under engineering their safeguards, which can lead to compliance failures or, worse, a serious incident.
What is the difference between Flashpoint, Flammable Limits (UEL/LEL), and Auto-Ignition Temperature (AIT)?
These are three distinct but complementary properties used to characterise the flammability of a substance. Flashpoint is the lowest temperature at which a liquid produces enough vapour to briefly ignite when exposed to an ignition source.
Flammable Limits (LEL/UEL) define the concentration range in air within which a gas or vapour can form an explosive mixture — below the LEL it is too lean and above the UEL it is too rich to ignite.
Auto-Ignition Temperature (AIT) is the lowest temperature at which a substance will self-ignite in air without any external spark or flame. Together, these values form the foundation of a robust fire and explosion hazard assessment.
How quickly can Sigma-HSE turn around gas and vapour test results?
Sigma-HSE offers one of the fastest turnaround times in the UK. Once your sample has been received at the laboratory, you can expect your full test report within 7 to 10 working days. A bespoke quote can also be issued within days of getting in touch, so you won’t be left waiting weeks just to understand your costs.
Is Sigma-HSE's gas and vapour testing data suitable for DSEAR and ATEX compliance?
Yes. Sigma-HSE’s gas and vapour testing data is specifically formatted for use within DSEAR and ATEX compliance frameworks.
DSEAR requires businesses to identify and assess fire and explosion risks posed by dangerous substances, and having professionally tested, documented data allows you to close out recommendations quickly and with confidence.
For ATEX, the data helps you accurately determine where explosive atmospheres may exist and where ATEX rated equipment is required.
All of this is underpinned by a rigorous Quality Management System, meaning the data you receive is reproducible, peer reviewed, and stands up to regulatory scrutiny.
Can Sigma-HSE help after the testing is complete, or is it just a data service?
Sigma-HSE offers support well beyond the delivery of a report. Their experts can help you interpret your results, recommend a suitable Basis of Safety for your operations, and build a bespoke testing package tailored to your specific process needs. Whether you need help with ignition source avoidance, explosion prevention, or explosion protection strategy, Sigma-HSE’s team provides guidance throughout and beyond your project lifecycle.