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SPECIFICATION · COIR FIBRE

Coir fibre specification: brown mixed fibre, parameter by parameter.

The full specification of Carve coir fibre: values, test methods, bales and loading, the lot report, what the fibre is not, and the trade documents. Printable from the browser.

Updated 2026-09-24 · Sources at the end of the page

01 · Summary.

Carve supplies brown coir fibre of the mixed/mattress type: fibre decorticated from the mature dry coconut husk, separated from the pith on a rotary screen, 10 to 40 cm long, loose and not combed, pressed into bales. The same product is called coir fibre, coir fiber, coconut fibre or brown coir fibre in the trade. Every lot is tested before dispatch, and the results go on the lot report that the bale QR code opens.[1][2]

Scope of this sheet. The values below are the ones published on the Coir Fiber product page. Where a value depends on the lot or on the contract (impurities, EC, pH, bale weight), the sheet says so instead of giving a number.

02 · Parameter table.

ParameterCarve coir fibreNote
Fibre classBrown coir fibre, mixed/mattress typeLoose, unsorted by length. Not bristle, not curled, not twisted
Raw materialMesocarp fibre of the mature dry coconut husk (Cocos nucifera L.)Dry mature husk, never retted in brackish water
ProcessDecorticated mechanically; fibre retained on a rotary screen, ~4.1 mm meshNot combed. No chemicals, no additives
Length10–40 cmNatural length, uncut
Moisture≤ 18 %Measured per lot (mass before and after drying)
Impurities (pith and dust)Impurity limit agreed per contract; lot data on requestPith and dust content
Loose bulk density~55–80 kg/m³Actual value per lot
Lignin35–45 %Literature value for coir fibre
ColourBrownFibre from mature husk
EC and pH (1:5)Measured per lotRelevant only when the fibre goes into growing media
GradesNatural · Washed · BufferedNatural is the usual grade for industrial use
BalePressed bales of loose fibre. Export bales: 100–130 kg, specification on requestBale weights listed per lot on the packing list
Container loadingFloor-loaded 40' HC, no palletsNet tonnes per container confirmed with the export bale specification
HS code5305.00 (Brazil NCM 5305.00.90)Coir, raw or processed but not spun
OriginParaipaba, Ceará, BrazilShipped from the Port of Pecém

Values: Carve public data sheet.[1] Lignin is a literature value for coir fibre and is confirmed by an external laboratory before it is used in a contract.

03 · How each value is measured.

ParameterMethodWhen
MoistureMass of a sample before and after dryingEvery lot
Bulk densityMass over volume of a loose sampleEvery lot
Length and screen fractionVisual inspection against the 10–40 cm band and the ~4.1 mm screenEvery lot
EC1:5 extract (v/v)Every lot
pH1:5 extractEvery lot
Impurities (pith, dust)Limit and method agreed per contractLot data on request
Lignin, organic matter, mineralsExternal laboratory panelPeriodically

Bench tests as described on the Quality page.[2] Buyers who specify length fractions (for example, the share of fibre shorter than 30 mm) agree the method and the limit in the contract.

04 · Bales, loading and labels.

  • Export bales: 100–130 kg of loose fibre, pressed and strapped. The full bale specification (dimensions, strapping, weight tolerance) is sent on request.
  • Domestic bales: pressed bales of loose fibre, weight and volume on request.
  • Loading: floor-loaded in a 40' high-cube container, without pallets, so no ISPM 15 wood treatment is involved. Net tonnes per container are confirmed with the export bale specification before the quotation.
  • Labels: each bale carries the lot number and a QR code that opens the lot results. The packing list gives the bale count and the gross and net weights.
Pressed bales of loose brown coir fibre ready for dispatch
Bales of loose coir fibre, pressed for transport. Raw, uncombed fibre, 10 to 40 cm.

05 · Lot report and QR code.

Every lot is tested before dispatch. The lot report gives moisture, bulk density, EC and pH and the lot date (impurity data on request), and the QR code on the bale opens the same record. Lots outside the agreed range are held back and do not ship.[2] An example lot report is sent with the offer.

06 · What this fibre is not.

  • Not bristle fibre. Bristle is the longest fibre, combed and sorted for brushes and brooms. Carve fibre is raw and not suited to brushes, brooms or handicrafts.[1][3]
  • Not curled or twisted fibre. Carve ships loose baled fibre. Curling or twisting into rope is done by the converter.
  • Not white fibre. White fibre comes from green husks retted in water, mainly for yarn and rope. Carve fibre is brown, from mature dry husk.[3]

The grade names are explained in Coir fibre grades: bristle, mattress, mixed, twisted and white.

07 · Trade terms and documents.

ItemCarve practice
IncotermFOB Port of Pecém, Ceará. CFR on request through our forwarder.
Commercial documentsCommercial invoice, packing list (bale count, gross and net weight), bill of lading
Certificate of originIssued in Ceará by the state industry federation's international centre[6]
Phytosanitary certificateIssued by MAPA, Brazil's Ministry of Agriculture, when the destination requires it or the buyer asks for it[5]
Fumigation certificateWhen the destination requires it
Lot reportWith every shipment; QR code on every bale
SamplesLoose fibre from a production lot, sent by courier with its lot report. Quantity and courier terms agreed on request

Transit times from Pecém to ports in the Americas and Europe are on Coir fibre for buyers in the Americas.

08 · Frequently asked questions.

Is this bristle coir fibre?

No. It is brown mixed fibre of the mattress type: decorticated from dry mature husk, 10 to 40 cm, loose and not combed. Bristle fibre is combed and sorted by length for brushes; Carve does not supply it.

What moisture does the fibre ship at?

The guaranteed maximum is 18 %, measured on every lot by weighing a sample before and after drying. A lower contractual limit can be agreed per order and is then printed on the lot report.

What is the impurity (pith and dust) content?

The impurity limit is agreed per contract with the buyer before the order; lot data on request.

How heavy are the bales, and how many tonnes fit in a 40' HC?

Export bales weigh 100 to 130 kg; the full bale specification is sent on request. Net tonnes per 40' HC depend on the bale density and are confirmed with that specification before any quotation. Carve does not publish a container figure until it is measured on its own export bales.

Can I get a printable specification?

Yes. This page prints as a specification sheet from the browser (File, Print). An example lot report is sent with every offer.

09 · Sources.

  1. Carve public data sheet, Coir Fiber and Fibra de Coco: length 10–40 cm, moisture ≤18 %, loose density ~55–80 kg/m³, lignin 35–45 %, raw uncombed fibre, pressed bales.
  2. Carve, Quality and lot report: bench tests per lot (EC 1:5 v/v, pH 1:5, moisture, bulk density, screen fraction), external laboratory panel, lots outside the range held back.
  3. Wikipedia, "Coir": brown fibre from mature husks and white fibre from green husks; bristle and mattress fibre. en.wikipedia.org/wiki/Coir.
  4. APM Terminals Pecém: shipping lines and services calling Pecém.
  5. MAPA, phytosanitary requirements and certification for plant exports: gov.br/agricultura.
  6. CIN-CE (FIEC), certificate of origin: cin-ce.org.br.
CARVE
About this page. Specification sheet maintained by Carve Biorrefinaria Agroindustrial Ltda, coir pith and coir fibre producer in Paraipaba, Ceará, Brazil. The values are those of the public data sheet and are confirmed per lot. First published September 24, 2026. Corrections: [email protected].

Request the export bale specification

Send the intended use, the monthly volume and the destination port. We reply with the bale specification, an example lot report and an FOB Pecém offer.