Standards

Frequently asked

What is coconut shell charcoal?

Coconut shell charcoal is a high-density carbon material produced by the slow, low-oxygen pyrolysis of mature coconut shell endocarp — the hard inner shell that protects the coconut seed. The endocarp is one of the densest plant materials on earth. When its volatile compounds are driven off through controlled heating, what remains is a clean carbon block with significantly higher fixed carbon content than wood-based charcoal. It is the standard fuel for shisha worldwide and is increasingly used as a binchotan substitute in Japanese-style restaurants.

What fixed-carbon result did Carsurin report?

Carsurin reported fixed carbon of 78.43% on a wet basis and 80.05% on a dry basis. The dry-basis result was calculated using method MWI.01.21.LCH. These values apply only to the submitted 3.00 kg sample.

What ash result did Carsurin report?

Carsurin reported ash content of 2.48% on a wet basis and 2.53% on a dry basis using ASTM D1762-84 (2021), section 7.4. The report does not assess ash colour.

What moisture and volatile-matter results did Carsurin report?

Carsurin reported moisture of 2.02% on a wet basis and volatile matter of 17.07% on a wet basis and 17.42% on a dry basis. The methods stated in the report are ASTM D1762-84 (2021), sections 7.2 and 7.3.

What briquette geometries are produced?

The available geometries are cube, hexagon, and finger, produced to the dimensions agreed in the buyer's written specification. Geometry and dimensions are commercial product options and are not assessed in Carsurin Report of Analysis 262561.2526.

What is the minimum order quantity?

Cakrawala Bara Global accepts a minimum first order of one twenty-foot container, approximately eighteen metric tonnes of finished product. There is no submission form on the website. First contact is by email, after which a written specification is agreed before any production begins. The company does not run a catalogue; the specification is the contract.

How are batches tested before shipment?

The published Carsurin report covers one submitted 3.00 kg sample. It reports moisture, ash content, volatile matter, and fixed carbon only. Shipment or batch-specific testing requirements are agreed with the buyer as part of the written specification.

Are specification documents and an MSDS available?

The attached document is a Report of Analysis, not an MSDS or shipping certificate. Carsurin states that it is not intended for submission to a shipping line. Shipment-specific documentation and testing requirements are agreed before production.

Where is Cakrawala Bara Global based?

Cakrawala Bara Global is registered in Pati, on the north coast of Central Java, Indonesia. Pati is the country's principal coconut charcoal manufacturing cluster, with established kiln, press, and packing infrastructure and direct road access to the port of Semarang. Manufacturing happens in Pati; shipments leave through Semarang. The company was founded in 2025.

Where does the raw coconut shell come from?

Raw coconut shell is sourced from four regions of the Indonesian archipelago: North Sulawesi (Minahasa highlands and Bolaang Mongondow), Maluku, Lampung in southern Sumatra, and coastal East Kalimantan. Indonesia's premium export-grade shells do not come from a single region — they come from this corridor of equatorial islands where mature plantations, volcanic and alluvial soils, and a long wet season produce dense, oily, thick-walled shells. Central Java grows comparatively few coconuts; it is where the shells are turned into charcoal, not where they are grown. Cakrawala Bara Global does not blend regions in a lot; each lot is traceable to a named region and a named collector.

Why are these regions chosen over others?

Shell density and wall thickness vary measurably by region, even within the same coconut species (Cocos nucifera). North Sulawesi consistently produces the densest, oiliest shells — volcanic soil, mature plantations, reliable rainfall. Maluku contributes smaller volumes of similar quality from its inner islands. Lampung offers the most consistent supply at slightly lower density and is logistically efficient via Sumatran ports. Coastal East Kalimantan rounds out the calendar when inter-island freight is interrupted by weather. A coconut grown on a salt-soaked atoll or on the dry edge of an eastern island gives a thinner, lighter shell with less fixed carbon to work with; we do not buy from those regions.

How does the company select raw material?

Raw coconut shell is purchased in lots, not in bulk volumes. A lot is what one named collector consigned from one named region in one shipment. Each lot is inspected against six criteria before acceptance: moisture below 12% on arrival at the workshop, wall thickness minimum 3 mm at the equator of the shell, mature shells only, no visible mould or salt residue, traceable origin to a named region (North Sulawesi, Maluku, Lampung, or coastal Kalimantan), and de-husked and sun-dried at source within ten days of harvest. Rejected lots are returned, not blended into accepted material, and regions are not blended within a lot. Acceptance is signed by the workshop lead and one second pair of eyes, with the date, the collector, the region, and the weight written down.