01 · Direct answer.
The lot report carries five measurements made before shipment: electrical conductivity (EC, 1:5 extract), pH (1:5 extract), moisture, bulk density and particle size against the ~4.1 mm screen.[3] The QR printed on each bag opens that report, plus the origin of the husk (farm, municipality and collection date), the processing date and the photo or video of the test.[3] A lot outside the contracted limit does not ship.
| Parameter | Method | How to read it |
|---|---|---|
| EC | 1:5 extraction by volume, calibrated conductivity meter | Compare with the contract ceiling. Natural 0.8-1.5 mS/cm, Washed below 0.7, Buffered below 0.5 |
| pH | 1:5 extraction by volume, calibrated pH meter | Literature for raw dry husk: 4.9-6.0 |
| Moisture | Weighing before and after drying | Guarantee: 18 % at most, wet basis |
| Bulk density | Mass divided by volume in a graduated container | Declared range ~90-95 kg/m³; sets the weight of a 100 L bag |
| Particle size | Visual inspection and conformity with the ~4.1 mm screen | Type recorded; screened on a rotary screen |
Methods as on the Quality page; ranges as on the Coir Pith data sheet.
02 · The five bench tests.
Between the husk arriving at the plant and the bag leaving, there are six steps: intake, processing, bench testing, release decision, packing with label, and dispatch.[3] Bench testing is the third step and happens before packing:
- The five parameters are measured on every production lot, without exception.[3]
- Each test is filmed and the result is recorded in the lot system.[3]
- The result is compared with the customer's acceptance limit: within the standard, the lot goes to packing; outside, the lot does not ship.[3]
- A package without a QR label is not dispatched.[3]
For export shipments the lot analysis report travels with the document set, QR-linked, and an external laboratory panel is run on the first shipment of each grade.[5]
03 · What the bag QR opens.
- The result of the lot's five bench tests.[3]
- The origin of the husk: farm, municipality and collection date.[3]
- The processing date.[3]
- The photo or video of the bench test.[3]
Each real lot carries its own measured values; the site does not publish catalogue ranges that do not come from measurement.[3]
04 · How to read each number.
- EC (1:5). Check the extract ratio first: 1:5 and 1:1.5 give different readings of the same material.[4] Then compare with the contract ceiling and with the band of the grade bought. Raw husk ranges from 0.4 to 6.0 mS/cm according to EMBRAPA, so the lot's number, not an average, is what counts.[1] Bands by crop are in Coir pith EC by crop.
- pH (1:5). The literature for raw dry coconut husk runs from 4.9 to 6.0.[1] The value is reported per lot, and correction to the working range is done by the grower in the formulation or the fertigation.
- Moisture. The guarantee is 18 % at most at packing. A lot above that does not ship.[3]
- Bulk density. Multiply by 0.1 to get the weight of a 100 L bag: at 95 kg/m³, 9.5 kg. Conversion to liters per kg is in Coir pith liters per kg.
- Particle size. Screened at ~4.1 mm, with most particles below 2 mm. Particles below 0.5 mm are undesirable because they clog aeration pores.[2][3]
05 · What the bag label states.
- Lot number and product name.[4]
- Volume: 100 L.[4]
- Net weight of the bag, specific to the lot, with a declared tolerance of plus or minus 5 %.[4]
- Lot density and moisture at the time of packing.[4]
- The QR that opens the report. Any bag can be checked on any scale against the label weight.[4]
For the arithmetic of a whole load, see Coir pith per truck.
06 · What the bench report does not cover.
- Tannin, organic matter, water holding capacity and mineral analysis are in the external laboratory panel, run periodically on lot material, with results on request.[3]
- The conductivity meter reads the salts dissolved in the extract. The potassium and sodium held in coir's organic complex do not show in the reading and are displaced only by calcium or magnesium, according to Romero.[2] A low EC does not replace the right grade: see Washed vs unwashed coir pith.
- The report describes the lot at the time of the test. The reference value in any dispute is the one on the report, checked against the contract limit.[3]
Company registration data: Company facts.
07 · Frequently asked questions.
What does EC 1:5 mean on the lot report?
It means electrical conductivity was measured in an extract of one part substrate to five parts water, by volume. The ratio is part of the result: a 1:1.5 extract gives different numbers for the same material. All of Carve's bands (Natural 0.8 to 1.5 mS/cm, Washed below 0.7, Buffered below 0.5) are in the 1:5 extract.
Is the report per bag or per lot?
Per lot. The five tests are made once per production lot, before packing, and every bag of that lot carries the label with the QR that opens the same report. What changes from bag to bag is the net weight, which is checked when each bag is weighed at filling.
What happens if a lot falls outside the contract limit?
The lot does not ship. After bench testing, the result is compared with the acceptance limit fixed in the customer's contract; within the limit, the lot is approved for packing; outside, it is held back. A package without a QR label is not dispatched.
Does the lot report include tannin and organic matter?
Not in the bench panel, which covers EC, pH, moisture, bulk density and particle size. Tannin, organic matter, water holding capacity and mineral analysis are in the external laboratory panel, run periodically on lot material, with results available on request. For export, an external laboratory panel is run on the first shipment of each grade.
Does a low EC on the report mean the coir pith is salt-free?
No. The conductivity meter measures the salts dissolved in the extract; the potassium and sodium held in coir's organic complex do not show in the reading and, according to Adalberto Romero, are displaced only by calcium or magnesium. For salt-sensitive crops what matters is the contracted grade (Buffered), not only the EC number.
08 · Sources.
- EMBRAPA Tabuleiros Costeiros, Comunicado Técnico 226 (COT-226-19): raw EC 0.4-6.0 mS/cm and pH 4.9-6.0 of dry coconut husk.
- Ing. Adalberto Romero webinar (Science Fetti / El Semillero, Colombia, 2025): particles below 0.5 mm undesirable; water does not displace Na/K from the organic complex, only Ca or Mg.
- Carve Quality and Coir Pith pages: six steps, five bench tests and methods, QR content, release decision, periodic external laboratory, bands by grade, maximum moisture 18 %, density ~90-95 kg/m³, ~4.1 mm screen.
- Carve bench and packing procedure: extract ratio stated on every result, label content, 5 % tolerance on net weight.
- Carve export document set on Import Coir from Brazil: QR-linked lot analysis report; external laboratory panel on the first shipment of each grade.