Certificate of Analysis fields for GPC lots
Jiushun can list the fields below on a lot COA with the shipment. Third-party laboratory brands are named only when a scanned report for that lot is available.
| Field | Note |
|---|---|
| Grade / model | ZW01–ZW04, ZWS01–ZWS03, or custom grade code |
| Fixed carbon (F.C.) | Minimum % as ordered |
| Sulfur (S) | Maximum % as ordered (ZW sheet ≤0.05%; ZWS sheet higher) |
| Ash | Maximum % as ordered |
| Volatile matter (V.M.) | Maximum % as ordered |
| Moisture | Maximum % as ordered |
| Nitrogen (N) | ppm as ordered (ZW 100–300 ppm; ZWS 300–500 ppm) |
| Particle size | mm range as ordered (1–5 mm most requested for GPC) |
| Lot / batch number | Factory lot identification |
| Net weight | As packed for the shipment |
Sample third-party test report (not a certification)
Report No. MERTJ2604279-01A(Job No. MNE263160TJ), issued 2026-08-27 by SGS-CSTC Standards Technical Services (Tianjin) Co., Ltd. for a client-supplied graphitized petroleum coke granule sample (received 2026-08-24). Principal name on the report matches Lingshou County Jiushun Mineral Products Co., Ltd.
- This is one sample test for internal reference. It is not an ISO/SGS plant certification.
- Results on that report are batch-specific. They do not replace ZW01–ZW04 sheet maxima or minima.
- The report warns that the sample was drawn or provided by the client and is for internal reference only.