AUS 40 (Aqueous Urea Solution 40%)
AUS 40 Marine Grade in Australia

AUS 40
(Aqueous Urea Solution 40%)
AUS 40, or Aqueous Urea Solution 40%, is a clear, colorless liquid solution consisting of 40% high-purity urea dissolved in deionized water. This solution plays a crucial role in reducing harmful emissions from marine vessels, making it an essential component in the maritime industry’s efforts to meet stringent environmental regulations.
- 40% urea dissolved in deionized water
- Specifically formulated for Selective Catalytic Reduction (SCR) systems
- Reduces nitrogen oxide (NOx) emissions from ship engines and boilers
- Made to order
- Compliant with ISO Standards 18611-1:2014
- Available in 1,000 Litres IBC packaging
Features of AUS 40
- Composition: 40% urea, 60% deionized water
- Appearance: Clear, colorless liquid
- Odorless
- Non-toxic and non-flammable
- Stable under normal storage conditions
- Specifically formulated for marine applications

Usage of AUS 40
AUS 40 is primarily used in Selective Catalytic Reduction (SCR) systems aboard marine vessels. These systems are designed to reduce nitrogen oxide (NOx) emissions from ship engines and boilers. Here’s how it works:
- AUS 40 is injected into the exhaust gas stream.
- The heat of the exhaust breaks down the urea into ammonia.
- The ammonia reacts with NOx in the presence of a catalyst.
- This reaction converts harmful NOx into harmless nitrogen and water vapor.
By using AUS 40 in SCR systems, ships can significantly reduce their NOx emissions.
Compliance and ISO Standards

Our AUS 40 Marine Grade solution is manufactured in full compliance with ISO Standards 18611-1:2014. This standard specifies the requirements for aqueous urea solution used in marine SCR systems, ensuring:
- Correct urea concentration
- Appropriate purity levels
- Absence of harmful contaminants
- Stability and effectiveness in marine environments
By adhering to these standards, we guarantee that our AUS 40 solution meets the highest quality requirements for marine applications.
Benefits of Using AUS 40
- Environmental compliance: Helps ships meet IMO Tier III NOx emission standards
- Improved air quality: Significantly reduces harmful emissions
- Cost-effective: Enables efficient engine operation while reducing emissions
- Versatile: Suitable for various types of marine engines and boilers
- Safe to handle: Non-hazardous solution
How to Purchase AUS 40 in IBCs
1. Enquire & Get a quote
Submit an online inquiry. Bauly will promptly send you a quote based on your requirements by email.
2. Order & Payment
Send your order confirmation to Bauly by email. Make the payment upon receiving Bauly's invoice,
3. Pickup / Delivery
Collect the AUS 40 from Bauly's depot or Have Bauly deliver the AUS 40 directly to your location.
