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A 40% urea solution for marine SCR systems to ISO 18611, blended with EDI ultra-pure water and batch-tested at Vietnam’s first VDA-certified plant. Delivered in IBCs or pumped straight aboard at the berth.
Since 2021, newbuilds operating in emission control areas must meet Tier III — and an SCR system only performs when the urea solution meets the standard and the supply keeps pace with the ship’s schedule.
40% concentration cuts storage volume by roughly 20% against AUS 32 — precious space on any vessel. Alkalinity, biuret and trace metals are controlled to ISO 18611.
Blended with EDI ultra-pure water; the in-house laboratory tests every batch before release. The plant holds VDA certification — the first in Vietnam.
IBC 1000L, dedicated tankers, or scheduled supply timed to your port calls — Hai Phong, Cai Mep, Cat Lai and regional ports.
| Characteristic | Unit | Min | Max | Test method |
|---|---|---|---|---|
| Urea content | % (m/m) | 39 | 41 | ISO 18611-2 |
| Density at 20°C | kg/m³ | 1105 | 1177 | ISO 3675 or ISO 12185 |
| Refractive index at 20°C | — | 1.3947 | 1.3982 | ISO 18611-2 |
| Alkalinity as NH₃ | % (m/m) | — | 0.5 | ISO 18611-2 |
| Biuret | % (m/m) | — | 0.8 | ISO 18611-2 |
| Aldehydes | mg/kg | — | 100 | ISO 18611-2 |
| Insoluble matter | mg/kg | — | 50 | ISO 18611-2 |
| Phosphate (PO₄) | mg/kg | — | 1 | ISO 18611-2 |
| Calcium | mg/kg | — | 1 | ISO 18611-2 |
| Iron | mg/kg | — | 1 | ISO 18611-2 |
| Magnesium | mg/kg | — | 1 | ISO 18611-2 |
| Sodium | mg/kg | — | 1 | ISO 18611-2 |
| Potassium | mg/kg | — | 1 | ISO 18611-2 |
| Identity | — | Identical to reference | ISO 18611-2 | |
Values per ISO 18611, Table 1 — the batch COA is the legal record at handover. Full TDS/SDS are supplied through the quote form.
Vessel type, SCR capacity, monthly volume, ports of call — a Madin engineer proposes a configuration within 24h.
A 10L sample with COA and TDS/SDS for your engine department to cross-check.
Format, delivery schedule, price and credit terms agreed. A complete quality dossier for class registries.
Dispatch coordinated to each voyage’s ETA; the 24/7 hotline handles anything that comes up at the port.
AdBlue® is 32.5% urea to ISO 22241 for road diesel. AUS 40 is 40% urea to ISO 18611, designed for high-output marine SCR systems — the higher concentration reduces the storage volume carried aboard.
IMO MARPOL Annex VI Tier III NOx limits, which apply to vessels operating in NECA/ECA emission control areas. Your SCR maker’s type approval states the fluid standard it was certified on.
Blending with EDI ultra-pure water, in-house laboratory testing of every batch before release, retained reference samples per lot, and a COA accompanying every delivery. The plant is VDA-certified.
Yes — AUS 40 is part of the Madin OEM programme: your label, bilingual VI/EN artwork, packed in IBCs or supplied by tanker.
Tell us about your fleet — a Madin engineer calls back within working hours, with a sample and the full quality dossier: COA · TDS · SDS.
Thirty seconds to fill in — no spam, just one advisory call.
Your details are used for this quotation only, per Madin’s privacy policy.
