Sample Certificate of Analysis (COA)
This is a representative COA for our gold-grade coconut shell activated carbon (6×12 mesh, CIP/CIL). Every shipment is accompanied by a COA for that exact lot for the routine tests listed below. K/R is not tested in our in-house laboratory.
Test laboratory: YELI in-house QC laboratory, Longyan plant (Fujian).
Sample COA — Gold Recovery Grade Coconut Shell GAC
| Parameter | Result | Test Method |
|---|---|---|
| Iodine adsorption value | 1050 mg/g | GB/T 12496.8-2015 |
| Strength (hardness) | 98.4% | GB/T 12496.6-1999 |
| Moisture (H₂O) | 4.8% | GB/T 12496.4-1999 |
| Particle size 6×12 mesh (1.70–3.35 mm) | 95% min | GB/T 12496.2-1999 |
| Apparent density | 0.51 g/mL | GB/T 12496.1-1999 |
| Ash content | Example; grade-specific limit | GB/T 12496.3 |
| Abrasion resistance | ≥ 98.2% retention, 30 min | ASTM D3802 |
Note: Values shown are representative of our standard gold-grade spec. The COA shipped with each order reflects that exact batch. Iodine can be tailored from 1000 to 1300 g/kg, hardness up to 98%+, mesh 6×12 / 8×16 / 3×6 mm.
Download the blank COA template (PDF) →
The template shows the routine batch parameters. K/R is not part of the standard COA; buyers may arrange third-party K/R testing under GB/T 32992-2016.
Why an Independent COA Matters
Buyers trust test results because they verify the carbon before it ships — and we encourage re-testing on delivery. A genuine factory has nothing to hide: ask for the COA of your exact lot, send a sample to your own lab, and compare. That is the verification standard we work to.
Export Document Requirements for Coconut Shell Activated Carbon
A coconut shell activated carbon export shipment travels with a document set, not a single certificate. Buyers who write the set into the purchase order avoid clearance delays at Dakar, Abidjan, Tema and other West African ports.
| Document | What it must show | Issued by |
|---|---|---|
| Certificate of Analysis (COA) | Lot number, production and test dates, measured iodine, hardness, ash, moisture, mesh distribution and platelet content, each with its test method | Manufacturer laboratory |
| Third-party test report (optional) | Independent verification of the same parameters, for internal approval or bank requirements | SGS, Intertek or a nominated laboratory |
| Packing list | Bag type and count, net and gross weight per pallet, container and seal numbers | Supplier |
| Safety Data Sheet (SDS) | Non-hazardous classification for sea freight, plus handling and storage guidance | Supplier |
| Certificate of Origin | Country of origin for customs and duty assessment | Chamber of commerce or authorised body |
| Phytosanitary or fumigation statement | ISPM 15 treatment of wood packaging where required by the importing country | Authorised treatment provider |
| Bill of Lading and shipping documents | Consignee, port of discharge, container and seal numbers | Carrier or freight forwarder |
What an export COA must not be: a brochure specification, a range copied from a data sheet, or a certificate issued for a different lot. The COA has to describe the material in the bags on that pallet in that container - otherwise it cannot support an acceptance decision, a rejection or a claim.
Request the COA for Your Lot
Every YELI Carbon shipment includes a COA for the exact batch. Tell us your target spec (iodine, hardness, mesh) and we will send a sample plus its COA for your lab to verify.
Request a Sample & COA →