What is the difference between Home Heating Oil and Marked Gas Oil?

Home Heating Oil (typically Kerosene) is used primarily for domestic boilers. Marked Gas Oil (Green Diesel/MGO) is a rebated fuel used in agriculture, construction, and some commercial heating systems. Both require specific markers and dye levels to be legally used.

How do I know if my fuel is contaminated?

Common signs include your boiler frequently locking out, smoke from the exhaust/flue, or visible sludge and water in your tank filters. However, many contaminants (like the Accutrace S10 marker or high sulphur) can only be detected via laboratory analysis.

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Independent Laboratory Ltd

To discuss marked gas oil testing and home heating oil testing with an expert, contact our offices today.

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Marked Gas Oil Testing

Ensure Fuel Quality, Compliance, and Efficiency

Whether you are a homeowner, a commercial business, or a distributor, the quality of your fuel matters. At Independent Laboratory Ltd, we provide Ireland's most comprehensive testing for Home Heating Oil (Kerosene) and Marked Gas Oil (MGO).

Our state-of-the-art laboratory in Dublin identifies contaminants, verifies fuel integrity, and detects tampering to protect your heating systems and ensure regulatory compliance.

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Why Test Your Heating Oil or MGO?

Poor quality or contaminated fuel can lead to costly repairs and system downtime. Our analysis helps you:

Protect Your Equipment:

Detect water, sediment, and microbes (the "diesel bug") that clog filters and damage pumps.

Verify Compliance:

Ensure your Marked Gas Oil contains the correct molecular markers (like Accutrace S10) to avoid legal issues with Customs & Excise.

Detect Adulteration:

test for residual dyes and sulphur content to identify if fuel has been tampered with or "laundered."

Improve Efficiency:

Clean fuel burns more efficiently, reducing your carbon footprint and saving you money on heating costs.

Our Testing Parameters
We offer a full suite of analytical tests for M.G.O. and Heating Oil using international standards (ASTM/IP):

Don't leave your heating system or business operations to chance. Get precise, independent results from Ireland’s leading fuel laboratory.

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Our Testing Parameters

Test Component	Method	What it Tells Us
Water Content	ASTM D1094 / D1744	Detects free or suspended water that causes corrosion.
Microbial Analysis	Colony Count	Checks for bacterial and fungal growth (Diesel Bug).
Sulphur Content	IP 336	Verifies compliance with environmental regulations.
Marker Dye & UV	UV Analysis	Confirms the presence of legal markers or illegal laundering.
Flash Point	IP 34	Assesses the safety and volatility of the fuel.
Cloud/Cold Filter Plug Point	IP 219 / IP 309	Determines how the fuel performs in cold Irish winters.
Distillation & Density	IP 123 / IP 160	Verifies the purity and composition of the product.
Appearance & Sediment	Visual	Identifies physical debris that can block injectors.

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