This granule grade is produced and tested against HG/T 3278-2018 and is the one we recommend for oil palm estates that need a documented specification on file. Certification is not a marketing label here: the standard fixes the humic acid, organic matter, solubility, pH and moisture bands, and our lots are released only when the lab sheet lands inside them.
Estates in Riau, Jambi and South Kalimantan have used this grade in their replanting and immature palm programmes. The usual question is not whether humate works, but how to prove the material in the store matches what was ordered. Our answer is a lot number printed on every bag, a retained sample held for twelve months, and a COA issued per reactor batch rather than per shipment. When an estate auditor pulls a bag, the number on it leads back to a lab sheet the same day.
The granules are 1.0-3.0 mm on request or standard 1.5-2.5 mm, air dried, and packed for tropical storage with a PE liner that keeps monsoon humidity out of the bag during the three-week sea leg.
Key Features
- HG/T 3278-2018 compliance: released against the national standard bands for humic acid, organic matter, pH and moisture.
- Audit-ready traceability: bag lot number, retained sample and per-batch COA link the material in your store to a lab sheet.
- Tropical packing: PE liner and heat-sealed bag mouth keep moisture pickup below one percent across a normal sea voyage.
- Estate application rates: 300-500 g per palm at the weeded circle, twice yearly, without blocking hand spreaders.
- Slow nutrient release: the granule breaks down over two to three rainfall events, feeding the root zone instead of the drain.
- Consistent colour and hardness: glossy black surface and firm granule that resists crushing in the bag during stacking.
Technical Specifications
| Parameter | Specification |
|---|
| Product name | Sodium Humate Granules, certified plantation grade |
| CAS number | 68131-04-4 |
| HS code | 38249999 |
| Total humic acid (dry basis) | ≥60% |
| Total organic matter (dry basis) | ≥80% |
| Water solubility | ≥98% |
| pH (1% solution) | 9-11 |
| Moisture | ≤15% |
| Granule size | 1.5-2.5 mm standard, 1.0-3.0 mm on request |
| Crushing strength | ≥8 N per granule |
| Standard | HG/T 3278-2018 |
Applications and Dosage Guidance
Immature palm: 200-300 g per palm per round, placed in a ring 30-50 cm from the trunk and covered lightly with soil or pruned frond mulch. Mature palm: 400-600 g per palm per round, twice a year, either broadcast in the weeded circle or blended into the compound fertiliser. On replant programmes, work 2-3 kg per planting point into the backfill soil and let it settle for two weeks before field planting.
The same grade is used on coconut, areca and pepper vines in the region. On pepper, 150-250 g per vine per year in two splits, applied at the drip line rather than against the stem, has given growers a visible improvement in root flushes after the wet season. Do not exceed 600 g per plant in one application on sandy soils; excess sodium is as unhelpful as a shortage of organic matter.
Packaging, Documentation and Quality Assurance
Standard packing is 25 kg PP woven bags with an inner PE liner, 40 bags per 1 tonne pallet, stretch wrapped and strapped for container loading. Jumbo bags of 1,000 kg are available for estates with their own bagging or blending equipment. Estate branding with application instructions and a lot number block is free from 500 bags.
Each container ships with COA, MSDS, packing list and certificate of origin where required. We also supply a short agronomy note in English and Bahasa Indonesia explaining application rates for immature and mature palm, which estate managers can forward to their field teams. Pre-shipment inspection through SGS, Intertek or BV can be arranged, and our plant is open to buyer audits under our ISO 9001:2015 system.
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