# Sample Certificate of Analysis — Gold Recovery Coconut Shell Carbon (YELI Carbon)

> Source: https://www.yelicarbon.com/coa-sample-gold-carbon.html

See the quality standard we ship to, tested on every batch in our own QC laboratory.

## 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 tested and accompanied by a COA for that exact lot — tested to GB/T methods in our own QC 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 g/kg** | 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 | **≤ 5%** | GB/T 12496.3 |

*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.*

## 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.

### 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 → (https://www.yelicarbon.com/contact.html#quote-form)

### Related reading

- Activated Carbon for Gold Recovery: The Complete Guide (https://www.yelicarbon.com/blog-gold-recovery-carbon-complete-guide.html)

- Iodine Number vs Methylene Blue Explained (https://www.yelicarbon.com/blog-iodine-test.html)

- How to Verify a Carbon Supplier (https://www.yelicarbon.com/blog-verify-activated-carbon-supplier.html)

- Gold CIP/CIL Grade Activated Carbon (https://www.yelicarbon.com/product-gold-cip-cil.html)

Browse all products & request a quote → (https://www.yelicarbon.com/products.html)