ISOISO 18611 CertifiedDirect ManufacturerPer-batch CoA + MSDS40% Marine Concentration
How AUS 40 Works

FROM NOx TO CLEAN EXHAUST

Selective Catalytic Reduction injects AUS 40 into hot exhaust gas. The urea releases ammonia, which reacts with nitrogen oxides over a catalyst, leaving only nitrogen and water vapour.

01 · DOSE

Inject AUS 40

Precise 40% urea solution is metered into the exhaust stream ahead of the SCR catalyst.

02 · REACT

Catalytic Conversion

Urea decomposes to ammonia, which reacts with NOx across the catalyst surface.

03 · EMIT

Nitrogen + Water

Harmless N₂ and H₂O leave the stack, securing IMO Tier III & MARPOL Annex VI.

Technical Specifications

ISO 18611-1:2014 & IS 17661 (Part 1):2022

0%
Urea Content
1.105–1.117
Density g/cm³ @20°C
<0.8%
Biuret (ISO limit)
12–18
Shelf life, months sealed
Urea content39.0 – 41.0 %
Density @ 20°C1105 – 1117 kg/m³
Refractive index @ 20°C1.393 – 1.397
Biuret< 0.8 %
ComplianceISO 18611 · IS 17661
↓ Download MSDS (PDF) ↓ Product Brochure (PDF)
Right Reagent

AUS 40 vs AUS 32 (AdBlue)

AUS 32 · AdBlue
32.5%
  • ISO 22241, road vehicles
  • Automotive SCR, low demand
  • Under-doses marine catalysts
AUS 40 · Marine
40%
  • ISO 18611 · IS 17661, marine
  • Engineered for ship SCR systems
  • Correct dosing & catalyst protection

Full AUS 32 vs AUS 40 guide →

West Coast
Mundra Gujarat · APSEZ
JNPT (Nhava Sheva) Maharashtra
Kandla Gujarat · Deendayal
Pipavav · Dahej · Hazira Gujarat
South Coast
Cochin Kerala
Tuticorin Tamil Nadu
East Coast
Chennai Tamil Nadu
Visakhapatnam (Vizag) Andhra Pradesh
Haldia West Bengal
Supply Network

AUS 40 Across
India's Ports

Dispatched to major maritime hubs on every coast, in 200L drums, 1000L IBC totes, ISO tanks and bulk tankers.

Delivery is only half the job. We also provide the unloading and pumping service. PROTICKS handles quayside delivery and alongside supply with our own transfer equipment: road tanker unloading at the berth, pumped discharge through dedicated hoses direct to your deck fill point, bunker barge supply and ship-to-ship transfer where berth access is restricted. Pump kit, hose, coupling set and calibrated flow meter are supplied and operated by our team.

AUS 40 unloading, pumping & discharge guide →
Full Indian port supply network →

AUS 40 Demand Estimator
Indicative estimate
·

Planning estimate only. Actual dosing depends on load profile, NOx target and OEM maps. Confirm with your engine/SCR supplier.

Plan With Confidence

Size Bulk AUS 40
In Seconds

Estimate approximate AUS 40 consumption for any vessel before you order, then request exact bulk pricing and a delivery window for your port. Every consignment ships with an ISO 18611 Certificate of Analysis and MSDS.

Answers

Frequently Asked Questions

How is AUS 40 different from AdBlue?
AUS 40 contains 40% urea concentration versus AdBlue's 32.5%. This higher concentration is engineered specifically for large marine diesel engines where storage space is limited and SCR systems require greater reagent density to achieve IMO Tier III NOx reduction targets.
Does PROTICKS provide an ISO 18611 Certificate of Analysis with delivery?
Yes. Every batch of PROTICKS AUS 40 is tested against ISO 18611 Parts 1–3 specifications. A full Certificate of Analysis and MSDS is provided with every delivery, ensuring seamless port authority inspection and crew safety compliance.
Which Indian ports does PROTICKS serve for bulk AUS 40 bunkering?
PROTICKS provides priority bulk delivery to Mundra (APSEZ), Kandla (Deendayal), Pipavav (SVPI), Dahej and Hazira from its Jamnagar, Gujarat headquarters, and coordinates delivery to ports on the South and East coasts (Cochin, Tuticorin, Chennai, Visakhapatnam, Haldia) on request.
What is the minimum order quantity for AUS 40?
Minimum order is 200L (single drum). IBC orders from 1,000L. Bulk tanker deliveries from 10,000L. Custom volumes and long-term supply contracts are available.
What is the shelf life and storage requirement for AUS 40?
PROTICKS AUS 40 has a shelf life of 12–18 months when stored between -5°C and +30°C, away from direct sunlight and strong UV exposure. Full MSDS provided with all temperature-sensitive storage guidance.
How is bulk AUS 40 unloaded and pumped into the vessel?
Bulk consignments arrive by road tanker or ISO tank and are discharged at the berth using a dedicated pump kit and food-grade compatible hose connected to your deck fill point or SCR dosing tank filling line. Typical flow rate is 100–400 L/min. Where the vessel cannot be reached from the quay, we arrange bunker barge supply and ship-to-ship transfer. All transfer equipment is dedicated to urea service only and never shared with fuel or lube oil, protecting the SCR catalyst. Full detail in our unloading & pumping guide.
Do you supply the pump and hose, or do we need our own?
PROTICKS supplies the complete transfer arrangement on bulk and IBC deliveries: a dedicated AUS 40 pump kit, hose, camlock/DN coupling set and flow meter. IBC handling on deck uses either gravity discharge through the bottom valve or a portable drum/IBC pump. Vessels that prefer to use their own equipment should confirm wetted materials are 304/316 stainless, HDPE, PP or PVDF before connection.
How far in advance do you need port call details?
48–72 hours notice is comfortable for quayside delivery at Gujarat ports (Mundra, Kandla, Pipavav, Dahej, Hazira) and 5–7 days for South and East coast port call scheduling. Share vessel name, berth/anchorage, ETA/ETD window, volume, packaging format and agent contact, and we align the tanker or barge slot to your window.
Knowledge Hub

Marine Urea Guides

Technical guides on AUS 40, SCR systems, IMO compliance and onboard handling, written for operators, superintendents and marine procurement teams.

Pillar Guide

What Is AUS 40? The Complete Marine Urea Guide

Definition, chemistry, ISO 18611 & IS 17661 standards, packaging and sourcing in India.

Read Guide → Technical

How Marine SCR Systems Work & Urea Dosing

Catalyst chemistry, closed-loop dosing, consumption estimation and ammonia slip control.

Read Guide → Regulatory

IMO Tier III & MARPOL Annex VI, Explained

NOx limits, Emission Control Areas, applicability dates and port state enforcement.

Read Guide → Operations

AUS 40 Unloading, Pumping & Discharge

Hose connections, flow rates, road tanker unloading, barge transfer and IBC handling at the berth.

Read Guide → All Guides

Visit the Knowledge Hub

Every guide in one place: storage & handling, AUS 32 vs 40, Indian port supply and more.

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