The most popular grade — hydrolyzed from natural protein, filtered, concentrated and spray-dried for full water solubility. The benchmark for premium foliar and biostimulant formulations.
Typical specifications — every shipment is verified against agreed values and supplied with a batch-specific COA.
| Parameter | Specification |
|---|---|
| Total Amino Acids | ≥ 45% |
| Total Nitrogen | ≥ 16% |
| Organic Matter | ≥ 60% |
| Moisture | ≤ 5% |
| pH (1% solution) | 4 – 6 |
| Water Solubility | 100% |
| Appearance | Light yellow to brown powder |
| Source | Hydrolyzed duck feather protein |
Free amino acid values verified by Eurofins (CNAS-accredited) using GB/T 18246-2019 analysis — Cert. No. AR-26-Y3-008790-02, issued 29-Apr-2026. Total free amino acids: 41.93%.
| Amino Acid | Content |
|---|---|
| Glutamic Acid | 6.50% |
| Serine | 5.78% |
| Glycine | 4.87% |
| Proline | 4.53% |
| Aspartic Acid | 4.19% |
Typical use rates for formulation and field application. The balanced concentration fits most foliar and fertigation programs.
| Application Method | Typical Rate |
|---|---|
| Foliar spray | 100 – 200 g per 100 L water (0.1 – 0.2%) |
| Fertigation / drip | 1.5 – 3 kg per hectare per application |
| Water-soluble NPK blends | 5 – 10% of finished blend weight |
| Biostimulant formulations | 10 – 30% of finished concentrate |
| Soil application / drench | 3 – 5 kg per hectare |
Rates vary by crop, growth stage and formulation target — our agronomy team provides crop-specific recommendations on request.
The grade most chosen by our formulator partners — verified 41.93% free amino acids in independent Eurofins testing.
≥ 60% organic matter feeds soil biology alongside crop nutrition, supporting buffering and microbial activity.
Strong glutamic acid, serine, glycine and proline levels deliver chelation, stress resistance and growth support.
Dissolves instantly and completely — no residue in tanks, drip lines or spray equipment.
Get specifications, pricing and documentation within 24 hours. Samples available for formulation testing.
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