25% Seaweed Extract Micro Granule
The Top of the Range, Built for Blending
Every lot ships with a Certificate of Analysis stating tested alginic acid, organic matter, K₂O and pH.
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. It is used as a root and foliar biostimulant, a soil conditioner and a raw material for organic fertilizer blends.
25% Seaweed Extract Micro Granule is the maximum-alginic grade in the range of our seaweed extract range. The top of the range: ≥ 25% alginic acid with ≥ 35% polysaccharides and ≥ 3.5% P₂O₅, for concentrated programmes and premium liquid or granular formulations.
It is supplied as a uniform micro granule and is 100% water soluble. The material is produced from Ascophyllum nodosum by physical crushing and hydrolysis, so the seaweed’s own alginic acid, polysaccharides, mannitol, betaine, amino acids and growth regulators reach the field intact. Use it in drip and flushing programmes, in foliar tanks, spread on the soil, or as a raw material in organic fertilizer blends.
Key Benefits
≥ 25% alginic acid
A guaranteed alginic acid floor of ≥ 25% — the seaweed fraction buyers check first when comparing grades.
Built for machines
Uniform, free-flowing granules that meter evenly through spreaders and blending lines.
Dissolves with no residue
100% water soluble — breaks down under agitation and leaves nothing to filter.
Natural growth regulators
Auxins, cytokinins and gibberellins from the seaweed, plus mannitol and betaine for stress tolerance.
Feeds soil biology
Polysaccharides and amino acids supply ready carbon to the soil microbiome and chelate trace elements.
COA on every batch
Each lot ships with a Certificate of Analysis stating tested alginic acid, organic matter, seaweed polysaccharides, K₂O and pH against the stated Chinese industry standards.
Technical Specification
| Parameter | Specification | Test standard |
|---|---|---|
| Appearance | Black micro granule | Visual inspection |
| Water solubility | 100% | NY/T 1973-2021 |
| pH | 8 – 11 | NY/T 1973-2021 |
| Organic matter | ≥ 40% | NY/T 1976-2010 |
| Alginic acid | ≥ 25% | NY/T 3174-2017 |
| Total seaweed polysaccharides | ≥ 35% | GB/T 5009 |
| Potassium (K₂O) | ≥ 20% | NY/T 1977-2010 |
| Moisture | ≤ 5% | GB/T 8576-2010 |
| Lead (Pb) | ≤ 50 ppm | NY/T 1978-2022 |
| Cadmium (Cd) | ≤ 10 ppm | NY/T 1978-2022 |
| Mercury (Hg) | ≤ 5 ppm | 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?
Request COA / MSDS / TDSForm & Solubility
Form: black micro granules, uniform in size and free-flowing — built for mechanical handling.
In water: 100% water soluble. The granule breaks down quickly under agitation and dissolves with no residue, so it works both in a dissolving tank and in a dry blend.
Handling: free-flowing with very little dust, so it meters evenly through spreaders and blending lines.
How the seaweed extract grades compare
| Grade | Form | Alginic acid | Organic matter | K₂O | Best for |
|---|---|---|---|---|---|
| 12% Seaweed Extract Powder | Powder | ≥ 12% | ≥ 50% | 10 – 12% | Bulk blending, broad-acre soil programmes |
| 12% Seaweed Extract Flakes | Small flake | ≥ 12% | ≥ 50% | 10 – 12% | Flushing, drip and foliar at volume |
| 14-16% Seaweed Extract Micro Granule | Micro granule | ≥ 14% | ≥ 45% | ≥ 14% | Mechanical spreading and dry blends |
| 14-16% Seaweed Extract Flakes | Small flake | ≥ 14% | ≥ 45% | ≥ 14% | General drip, foliar and flushing |
| 16% Seaweed Extract Big Flakes | Big flake | ≥ 16% | ≥ 45% | ≥ 14% | Broadcast spreading on open field |
| 18% Seaweed Extract Big Flakes | Big flake | ≥ 18% | ≥ 50% | ≥ 18% | Soil remediation and high-value crops |
| 18% Seaweed Extract Micro Granule | Micro granule | ≥ 18% | ≥ 50% | ≥ 18% | Blending into organic fertilizer lines |
| 20% Seaweed Extract Big Flakes | Big flake | ≥ 20% | ≥ 50% | ≥ 20% | High-load soil programmes |
| 20% Seaweed Extract Micro Granule | Micro granule | ≥ 20% | ≥ 50% | ≥ 20% | Compound and organic fertilizer blending |
| 25% Seaweed Extract Big Flakes | Big flake | ≥ 25% | ≥ 40% | ≥ 20% | Concentrated programmes, premium blends |
| 25% Seaweed Extract Micro Granule (this product) | Micro granule | ≥ 25% | ≥ 40% | ≥ 20% | High-load blending and fertigation |
All grades are 100% water soluble and carry the same seaweed-derived growth regulators. Higher alginic acid grades need a lighter dilution in the spray tank or irrigation line.
Applications & Dosage
For foliar, drip and flushing programmes, for spreading, and as a seaweed base in compound and organic fertilizer blends.
| Application | How to use | Rate |
|---|---|---|
| Foliar spray | Dilute 1:3000 – 1:4000 with clean water and spray in the cool part of the day. | 1:3000 – 1:4000 |
| Drip / water-flushing irrigation | Pre-dissolve and meter into the irrigation line or flushing water. | 1:3000 – 1:4000 |
| With compound fertilizer | Blend with NPK, organic or microbial compound fertilizer. | 1:100 |
| Tank-mix with pesticide | Add to pesticide or foliar fertilizer liquid to improve uptake. | 1:5000 |
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
Compound fertilizer plant, Shandong
Blended into an NPK granular line; the uniform granule size kept the batch even.
Explore applications → Field referenceCotton farm, Xinjiang
Dissolved into the fertilizer stock; no residue in the filters or drip lines.
Explore applications → Field referenceRice programme, Vietnam
Applied with the fertilizer programme; steadier growth through the tillering stage noted.
Explore applications →Full case studies with crop data are published in our application sectors.
Frequently Asked Questions
Which seaweed extract grade should I choose?
Grades are sold on alginic acid content. This one is 25% alginic acid, the maximum-alginic grade in the range. A higher alginic grade lets you use less product per hectare, while a lower grade suits bulk blending where cost per tonne leads. Tell us your crop and route and we will recommend the grade.
How do I dilute it?
Dilute 1:3000 – 1:4000 with clean water for foliar spraying, drip or water-flushing irrigation. With compound fertilizer use 1:100; added to a pesticide or foliar fertilizer tank use 1:5000. Always add the product to water, not water to the product.
Is it 100% water soluble?
Yes — 100% water soluble with no residue. It dissolves under light agitation and leaves nothing to filter, so it is 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 you need for your certification body.
Do you provide a COA per batch?
Yes. Every shipment travels with a Certificate of Analysis stating the tested alginic acid, organic matter, seaweed polysaccharides, K₂O and pH.
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.
Need a quotation or a sample?
Tell us your application, target market and packaging — we will come back with specification, price and lead time.
Request a Quote
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