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Seaweed Extract Powder
| Ingredients | Content I | Content II |
| Alginic Acid | ≥18% | ≥25% |
| Organic Matter | ≥40.0% | ≥45.0% |
| Total Nitrogen (N) | 0-1% | ≥1.0% |
| Phosphorus (P2O5) | 0-1% | ≥2.0% |
| Potassium (K2O) | ≥16% | ≥20% |
| Mannitol | / | ≥1.0% |
| Microelements (Fe/Zn/B/Mo) | ≥0.5% | ≥0.5% |
| Natural Plant Hormone | 300 ppm | 600ppm |
| PH | 9.0-11.0 | 9.0-11.0 |
| Solubility In Water | 100% | 100% |
| Appearance | Powder | Powder/Granule |
- Form
- Powder (ultra-fine)
- Declared
- Alginic acid: Present — the fraction that carries the film-forming and moisture-binding behaviour
- Applied by
- Foliar · drip · hydroponics · seed treatment · soil · cosmetic
Seaweed Extract Powder — specification
| Parameter | Declared value |
|---|---|
| Declared grades | Content I (standard) · Content II (high alginic) |
| Appearance | Content I: powder · Content II: powder/granule |
| Alginic acid | Content I ≥ 18% · Content II ≥ 25% |
| Organic matter | Content I ≥ 40.0% · Content II ≥ 45.0% |
| Total nitrogen (N) | Content I 0–1% · Content II ≥ 1.0% |
| Phosphorus (P₂O₅) | Content I 0–1% · Content II ≥ 2.0% |
| Potassium (K₂O) | Content I ≥ 16% · Content II ≥ 20% |
| Mannitol | Content I not declared · Content II ≥ 1.0% |
| Microelements (Fe/Zn/B/Mo) | Content I ≥ 0.5% · Content II ≥ 0.5% |
| Natural plant hormones | Content I 300 ppm · Content II 600 ppm |
| pH | 9.0–11.0 (both grades) |
| Solubility in water | 100% (both grades) |
| Non-agricultural use | Cosmetic and skincare formulations (masks, creams, lotions, shampoos) |
Two declared grades are supplied under this product page: Content I is the standard grade, Content II the higher-alginic grade. Figures are the declared values carried on this page, not a guaranteed result in every field. Moisture is not declared on this grade — ask our export team for the batch certificate of analysis.
How it is applied
- Foliar sprays and soil boosters in the field
- Drip irrigation and hydroponic nutrient solutions
- Seed treatment before sowing
- Cosmetic formulations, where it is used for moisture binding
Rate guidance: the rate depends on crop, growth stage and whether you spray, drench or apply to soil. Tell us the crop and the application method you use and we will send the rate for this grade.
Choosing between our seaweed extract grades
Our seaweed extract is supplied in four physical forms and three fortified variants. The right grade depends on how you apply it and what you are correcting.
| Grade | Form | What distinguishes it | Usual application |
|---|---|---|---|
| Seaweed Extract Flakes | Flake | Concentrated solid; dissolves for spray or irrigation | Foliar, root irrigation, soil |
| Seaweed Extract Powder (this grade) | Ultra-fine powder | Dissolves completely; also used in cosmetic formulations | Foliar, drip, hydroponics, seed treatment |
| Seaweed Extract Granules | Granule | Slowest to dissolve of the solids; strongest soil-conditioning effect | Foliar, soil treatment, hydroponics |
| Seaweed Extract Liquid | Liquid | Ready-to-dilute; alginic acid ≥ 8 g/L, K₂O ≥ 30 g/L | Foliar, drench, irrigation |
| Green Seaweed Liquid | Liquid, two grades | Standard and high-grade variants with different NPK balance | Foliar, soil, irrigation |
| Seaweed Extract — Micronutrient Type | Powder | Fortified to ≥ 13% micronutrients for trace-element correction | Foliar, soil, hydroponics |
| Seaweed Extract — Protein Type | Powder | Fortified to ≥ 80% protein and ≥ 14% N | Foliar, drench, drip |
| Seaweed Extract — Green NPK Type | Powder | Balanced with K₂O ≥ 16% for pre-harvest quality work | Foliar, drench, fertigation |
Technical background
If you are comparing this grade with others, or you need to justify the application to an agronomist or a buyer, these two guides cover the underlying chemistry and the field evidence: Seaweed fertiliser active ingredients — full guide and Application efficacy — what the evidence shows.
Related grades:
Technical data sheet, batch COA and packing options for this grade are available on request through our export team.
Seaweed Extract Powder — frequently asked questions
Which grades of Seaweed Extract Powder are available?
Seaweed Extract Powder is supplied as Content I (standard) · Content II (high alginic). Declared appearance: Content I: powder · Content II: powder/granule.
What are the declared specifications of Seaweed Extract Powder?
Declared values on this page: alginic acid — Content I ≥ 18% · Content II ≥ 25%; organic matter — Content I ≥ 40.0% · Content II ≥ 45.0%; total nitrogen (N) — Content I 0–1% · Content II ≥ 1.0%; phosphorus (P2O5) — Content I 0–1% · Content II ≥ 2.0%; potassium (K2O) — Content I ≥ 16% · Content II ≥ 20%; mannitol — Content I not declared · Content II ≥ 1.0%; microelements (Fe/Zn/B/Mo) — Content I ≥ 0.5% · Content II ≥ 0.5%; pH — 9.0–11.0 (both grades); water solubility — 100% (both grades). All figures are declared minimums or ranges, not guaranteed field results, and a batch-specific Certificate of Analysis accompanies every shipment.
How is Seaweed Extract Powder applied?
Typical application routes: foliar sprays and soil boosters in the field; drip irrigation and hydroponic nutrient solutions; seed treatment before sowing; cosmetic formulations, where it is used for moisture binding. The exact rate depends on the crop, the growth stage and the application method — send us your crop and method and we will return the recommended rate for this grade.
What should I know before ordering Seaweed Extract Powder?
Two declared grades are supplied under this product page: Content I is the standard grade, Content II the higher-alginic grade. Figures are the declared values carried on this page, not a guaranteed result in every field. Moisture is not declared on this grade — ask our export team for the batch certificate of analysis.
