No NPK Brown Seaweed Extract Powder
The NPK-Free Brown Powder — Micronutrient-Rich Seaweed Base
Organic matter ≥ 40%
Mannitol ≥ 1.5%
Water solubility 100%
Every lot ships with a Certificate of Analysis stating the tested values against the stated Chinese industry standards.
Product Overview
Seaweed extract is a water-soluble organic biostimulant produced from marine brown algae. JINGFENG’s Ascophyllum nodosum extract is obtained by physical crushing followed by enzymatic or biochemical hydrolysis, so the algae’s own alginic acid, seaweed polysaccharides, mannitol, betaine, amino acids and natural plant growth regulators (auxins, cytokinins and gibberellins) are preserved intact. The enzymatic range below is fermented and colour-graded (green, brown and black) for different formulation and label needs, and includes NPK-free grades for organic-only blends.
No NPK Brown Seaweed Extract Powder is our NPK-free enzymatic seaweed powder with a broader micronutrient panel: it supplies alginate and seaweed oligo, organic matter, mannitol, betaine and the trace elements boron, iron, manganese, zinc and copper — but no added nitrogen, phosphorus or potassium. It is a brown powder, 100% water soluble, for organic blends that still want a full trace-element spread.
Key Benefits
NPK-free with trace elements
No added N, P or K, yet supplies B, Fe, Mn, Zn and Cu from the seaweed itself.
Alginate + oligo base
≥ 30% alginate + seaweed oligo plus ≥ 40% organic matter in every batch.
Natural growth regulators
CTK / GA / IAA ≥ 700 ppm from the seaweed’s own phytohormones.
100% water soluble
Dissolves with no residue for drip, foliar and dry blending.
COA on every batch
Each lot ships with a Certificate of Analysis stating the tested values against Chinese industry standards.
Technical Specification
| Parameter | Specification | Test standard |
|---|---|---|
| Appearance | Brown powder | Visual inspection |
| Water solubility | 100% | NY/T 1973-2021 |
| pH | 6 – 7 | NY/T 1973-2021 |
| Alginate + seaweed oligo | ≥ 30% | GB/T 5009 |
| Organic matter | ≥ 40% | NY/T 1976-2010 |
| Mannitol | ≥ 1.5% | HPLC |
| Boron (B) | 0.2% | NY/T 1117-2010 |
| Iron (Fe) | 0.1% | NY/T 1978-2022 |
| Manganese (Mn) | 0.1% | NY/T 1978-2022 |
| Zinc (Zn) | 0.1% | NY/T 1978-2022 |
| Copper (Cu) | 0.1% | NY/T 1978-2022 |
| CTK / GA / IAA | ≥ 700 ppm | HPLC |
| Moisture | ≤ 5% | GB/T 8576-2010 |
| Nitrogen / P₂O₅ / K₂O | None — NPK-free | Product specification |
| Lead (Pb) | Not detected (N/D) | NY/T 1978-2022 |
| Cadmium (Cd) | Not detected (N/D) | NY/T 1978-2022 |
| Mercury (Hg) | Not detected (N/D) | NY/T 1978-2022 |
Specification values are guaranteed minimums on a dry basis, taken from the batch Certificate of Analysis and tested against the stated Chinese industry standards. Every shipment travels with its own COA stating the tested values.
Need the full Certificate of Analysis, MSDS, or TDS for your formulation or tender file?
Form & Solubility
Form: brown, free-flowing powder. Low dust for a seaweed powder; wets out readily and mixes evenly into dry blends.
In water: 100% water soluble. It disperses under light agitation and leaves no residue.
Handling: standard dust protection when handling bulk. Reseal opened bags to keep moisture out.
How the enzymatic seaweed extracts compare
| Grade | Form | Seaweed active | Organic matter | NPK | Best for |
|---|---|---|---|---|---|
| No NPK Green Seaweed Extract Powder | Powder | ≥ 60% alginic + poly | ≥ 60% | No NPK | Organic-only blends, soil |
| No NPK Brown Seaweed Extract Powder (this product) | Powder | ≥ 30% alginate + oligo | ≥ 40% | No NPK | Micronutrient-rich organic blends |
| Enzymatic Brown Seaweed Extract Liquid | Liquid | ≥ 15% seaweed oligo | ≥ 8% | N + P + K | Foliar and fertigation |
| Enzymatic Brown Seaweed Extract Powder | Powder | ≥ 30% alginate | ≥ 60% | N + P + K (K₂O ≥ 16%) | Compound fertilizer blending |
| Enzymatic Green Seaweed Extract Liquid | Liquid | ≥ 40% seaweed oligo | ≥ 15% | N + P + K | High-load foliar |
| Enzymatic Green Seaweed Extract Powder | Powder | ≥ 40% alginate | ≥ 60% | N + P + K (K₂O ≥ 18%) | Premium organic blends |
| Seaweed Extract Black Liquid | Liquid | ≥ 40 g/L alginic | ≥ 100 g/L | N + P + K (K₂O ≥ 40 g/L) | Instant soil and plant rejuvenation |
The enzymatic range spans NPK-free powders, NPK-bearing powders and ready-to-use liquids. Liquids are dosed per litre (g/L); powders are dosed per kilogram (w/w). Pick the form that fits your blending and application route.
Applications & Dosage
For dry blending and soil application where a full trace-element seaweed base without N, P or K is wanted.
| Application | How to use | Rate |
|---|---|---|
| Dry blend inclusion | Blend into NPK, organic or microbial compound fertilizer at 1 – 5%. | 1 – 5% inclusion |
| Soil application | Spread or broadcast and water in; the soluble powder carries into the root zone. | As programme |
| Foliar spray | Pre-dissolve and spray in the cool part of the day. | Pre-dissolved |
Packaging & Storage
| Pack size | Description |
|---|---|
| 1 kg / 5 kg / 10 kg | Printed aluminium foil bag |
| 10 kg / 20 kg | Printed carton box |
| 20 / 25 kg | Woven or paper bag with inner liner; colour-printed PP/PE bag with inner liner |
| 1000 / 1100 kg | Jumbo bag with discharge spout |
Storage: Store in a cool, dry, well-ventilated place, away from direct sunlight and moisture. Stable for 2 years in the sealed original packaging; reseal opened bags.
Custom packaging, private-label printing and OEM specifications are available on request. Packaging photos are available in the product gallery.
Successful Cases
Organic fertilizer blender, Henan
Used as an NPK-free trace-element base in an organic granular line; dispersed uniformly through the batch.
Explore applications →
Field reference
Tea garden, Yunnan
Spread along the rows before rain; a more even response than the untreated rows.
Explore applications →
Field reference
Citrus orchard, Spain
Sprayed in the cool part of the day; steady leaf colour and less heat stress noted.
Explore applications →
Full case studies with crop data are published in our application sectors.
Frequently Asked Questions
What does No NPK mean?
This powder contains no added nitrogen, phosphorus or potassium. It still supplies the seaweed’s alginate, oligo, mannitol, betaine and the trace elements B, Fe, Mn, Zn and Cu, so you can build your own N-P-K programme on top.
How is it different from the green No NPK powder?
The brown grade carries a wider micronutrient panel (B, Fe, Mn, Zn, Cu) and a higher CTK/GA/IAA level, while the green grade leads on organic matter and combined polysaccharides + alginic acid. Both are NPK-free.
Is it 100% water soluble?
Yes — 100% water soluble with no residue, safe for drip lines, micro-sprinklers and spray tanks.
Is it suitable for organic farming?
It is a seaweed-derived organic input with no added synthetic plant hormones. Ask us for the input list and technical data sheet for your certification body.
Do you provide a COA per batch?
Yes. Every shipment travels with a Certificate of Analysis stating the tested alginate + oligo, organic matter and micronutrients.
What is the minimum order and lead time?
Standard stock item. MOQ one pallet; 7 – 15 days ex-works. Private-label printing and custom blends are available on request.
Also Available in This Family
Seaweed Extract Black Liquid – High-Content Liquid Biostimulant
Enzymatic Green Seaweed Extract Powder – Alga GSP 50%
Enzymatic Green Seaweed Extract Liquid – Alga L 40% Biostimulant
Enzymatic Brown Seaweed Extract Powder – Bio-Alga BSP
Enzymatic Brown Seaweed Extract Liquid – Alga L 15% Biostimulant
No NPK Green Seaweed Extract Powder – Enzymatic Biostimulant
20% Seaweed Extract Big Flakes – High-Load Biostimulant
18% Seaweed Extract Micro Granule – High-Alginic Biostimulant
18% Seaweed Extract Big Flakes – High-Alginic Soil Conditioner
16% Seaweed Extract Big Flakes – Water-Soluble Biostimulant
25% Seaweed Extract Micro Granule – Maximum-Alginic Grade
25% Seaweed Extract Big Flakes – Maximum-Alginic Grade
20% Seaweed Extract Micro Granule – High-Load Biostimulant
14-16% Seaweed Extract Small Flakes – Water-Soluble Biostimulant
14-16% Seaweed Extract Micro Granule – Water-Soluble Biostimulant
12% Seaweed Extract Small Flakes – Water-Soluble Biostimulant
12% Seaweed Extract Powder – Organic Biostimulant Raw MaterialNeed a quotation or a sample?
Tell us your application, target market and packaging — we will come back with specification, price and lead time.
