Quality & Specifications.
Our Approach to Quality
Coreterra's quality management begins at the sourcing and supplier alignment stage, not only at the laboratory testing stage. Before any bulk order is confirmed, we align product grade, shape, packaging, destination requirements, and documentation needs with the relevant Indonesian supplier network.
Shipment-specific COA can be coordinated for confirmed orders before loading, where required. Pre-shipment COA is made available to buyers following sample approval. Reference specification documentation from previous shipments may be available during quotation stage to support grade selection and specification review.
Grade ranges and parameter targets shown on this website are quotation-stage reference specifications. Final shipment quality values are confirmed in the formal quotation, Proforma Invoice, and shipment-specific COA before loading.
Charcoal Briquette Grade Specifications
Reference grade matrix for coconut shell charcoal briquette quotation and supplier alignment.
Ultra-Premium Grade
- Ash Content Target: < 1.5%
- Fixed Carbon Target: > 83%
- Moisture Content: Max 2.5%
- Volatile Matter: Max 14.0%
- Calorific Value: 7,200–7,500 kcal/kg
- Burn Duration: 2.5–3 hours reference
Premium Grade
- Ash Content Target: < 2.0%
- Fixed Carbon Target: > 80%
Standard Grade
- Ash Content Target: < 2.5%
- Fixed Carbon Target: > 78%
Custom Buyer-Spec
Grade, shape, packaging, carton configuration, and performance target are aligned to buyer specification. Final parameters are confirmed in formal quotation and shipment-specific COA.
For Premium and Standard grades, additional technical parameters — moisture, volatile matter, calorific value, and burn duration — are aligned during quotation based on selected grade and buyer requirement.
Cocopeat Quality Parameters
Core Quality Parameters — Confirmed in COA per Shipment
- Electrical Conductivity (EC): per grade and buyer specification
- pH Value: per grade and buyer specification
- Moisture Content: per grade and buyer specification
- Particle Size Composition: per grade and buyer specification
Available Options
- Standard cocopeat
- Low EC washed cocopeat
- Buffered cocopeat
Specific cocopeat EC, pH, and moisture target values are confirmed in the formal quotation based on buyer crop requirements.
Certificate of Analysis (COA)
Shipment-specific COA can be coordinated for confirmed orders before loading, where required. This means each confirmed container shipment can have its own COA reflecting the actual quality parameters of the specific batch prepared for loading.
Pre-shipment COA is made available to buyers following sample approval and prior to final container loading. This allows buyers to review quality documentation before the goods are shipped.
Reference COA documentation from previous shipments may be available during quotation stage to support grade selection. This reference documentation should not be treated as valid certification for future orders. Each confirmed shipment is independently verified through its own shipment-specific COA.
Export Documentation Package
Standard export documentation may include:
- Commercial Invoice (CI)
- Packing List (PL)
- Certificate of Origin (COO)
- Certificate of Analysis (COA)
- MSDS / Safety Data Sheet
- Proforma Invoice (PI)
Additional Documents Available Upon Request
- Phytosanitary Certificate — destination-country requirement
- Fumigation Certificate — destination-country requirement
- Health Certificate — if required
- Other destination-specific documentation
Document availability and additional certification requirements are confirmed during the formal quotation. State your documentation requirements in the initial inquiry.
Packaging Quality
Packaging integrity is coordinated at the loading point prior to container loading. Inner packaging, carton specification, and pallet configuration are aligned to buyer requirements and confirmed in the formal quotation and packing list.
For charcoal briquettes, inner packs and master cartons are configured to protect against moisture exposure and maintain export presentation during transit.
For cocopeat, 5kg compressed blocks, bales, and grow bag formats are packed to maintain compression integrity and reduce moisture exposure during container transport.