DeltaLent Active DUO
Dual-action nitrogen stabilizer (DMPP + KPA)Ready-to-use nitrogen stabilizer combining DMPP, which slows nitrification, with KPA, which helps nutrients stay available in the root zone.

- Formulation
- Ready-to-use liquid (brown), for solid and liquid fertilizers
- Active ingredient
- DMPP and KPA (potassium polyaspartate)
- Main targets
- Urea, UAN, CAN, ASN, AN, NPK, DAP, MAP, blends, liquid fertilizers, slurries, digestates
- Concentration / Content
- DMPP 18% w/w
- Bulk Commercial Supply
- Full Technical Dossier
- Custom Formulations


Available formulations
DeltaLent Active DUO is supplied as a ready-to-use liquid combining DMPP 18% with KPA. Customized dosing recommendations are available on request.
Can't find the formula you are looking for? Our team creates custom formulas tailored to your crop's requirements.
Agronomic advantages
What DeltaLent Active DUO delivers, based on the DeltaChem product data.
Extended nitrogen availability
DMPP slows the conversion of ammonium to nitrate, extending nitrogen availability.
Reduced nitrate leaching
Helps reduce nitrate leaching.
Improved nutrient use efficiency
Supports better nutrient use efficiency (NUE).
Nutrients stay in the root zone
KPA helps nutrients stay available in the root zone.
Solid and liquid fertilizers
Suitable for both solid and liquid fertilizers.
Wide fertilizer range
Suitable where at least 50% of the total N is ammonium N and/or urea N.
Science & mode of action
How DMPP and KPA work together.
Mode of action: dual action
DeltaLent Active DUO combines two actives. DMPP slows the conversion of ammonium to nitrate, which extends nitrogen availability and reduces nitrate leaching. KPA (potassium polyaspartate) helps nutrients stay available in the root zone. It can be used where at least 50% of the total N is ammonium N and/or urea N.
How DMPP worksHow KPA worksSpecifications & dosage
Key technical characteristics and recommended dosage of DeltaLent Active DUO.
| Parameter / Component | Specification |
|---|---|
| Active ingredients | DMPP 18.0% w/w plus KPA (potassium polyaspartate) |
| Total N | 15.5% w/w |
| P₂O₅ | 6.6% w/w |
| pH | 4.2 |
| Density | 1.206 kg/L |
| Appearance | Brown liquid |
| Form | For solid and liquid fertilizers |
| Applicability | Where at least 50% of total N is ammonium N and/or urea N |
| Target fertilizers | Urea, UAN, CAN, ASN, AN, NPK, DAP, MAP, blends, liquid fertilizers, slurries, digestates |
| Packaging | 20 L PE cans, 200 L drums, 1000 L IBC; adaptable to customer needs |
| Regulatory | EU Regulation 2019/1009, PFC 5.A (nitrification inhibitor). REACH-registered ingredients. SDS on request. Professional use only. |
Dosage
| Parameter | Dosage |
|---|---|
| Product dosage | 0.8–1.6% of the total N present as urea and ammonium N |
Customized dosing recommendations are available on request.
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