Environmental regulations for ship operators grow stricter every year. The MARPOL Annex VI rules set by the International Maritime Organization (IMO) limit Nitrogen Oxide (NOx) emissions from vessels. This is where AUS 40 (Marine Urea) comes in.

What Is AUS 40?

AUS 40 is a solution specially formulated for ships, containing 40% urea and 60% deionized water. Unlike the standard AdBlue® used in road vehicles (32.5% urea), it has a higher concentration suited to marine engine SCR systems.

Why Use AUS 40?

• ISO 18611 Certified: Manufactured to the global standard for the marine industry.
• MARPOL Compliant: Meets IMO Tier III NOx emission limits.
• Efficient Consumption: A formula optimized for large-tonnage vessels, delivering high performance at low consumption.
• 24/7 Port Supply: Refueling available without disrupting operational continuity.

Technical Specifications

Property	Value
Chemical Composition	40% Urea + 60% Deionized Water
Standard	ISO 18611
Appearance	Clear, colorless liquid
Density (20 °C)	~1.11 g/cm³
Freezing Point	~0 °C

Supply Options

We offer three delivery methods tailored to the operational needs of the maritime sector:

1. Truck-to-Ship: Direct filling of the ship’s tank via tanker truck at port.
2. IBC Tanks (1000L): Standard IBC tanks that are easy to store and can be loaded onto vessels by crane.
3. Bulk Supply: High-volume delivery via barge or pipeline for large-tonnage vessels.

What Do MARPOL and IMO Tier III Mean?

The IMO Tier III standard requires vessels operating in designated Emission Control Areas (ECAs) to significantly reduce their NOx emissions. Ships that fail to comply can face penalties and port access restrictions. Using AUS 40 is one of the most practical ways for SCR-equipped vessels to meet these limits.

How Can I Place an Order?

For AUS 40 requests, fill out the quote form on the AUS 40 product page, or contact our global sales (export) team directly. With production facilities in Kocaeli and Hatay, we ensure fast supply to Turkish ports.