ASTM D5003 Standard Test Method for Hardgrove Grindability Index (HGI) of Petroleum Coke
7. Sampling and Sample Preparation
7.1 A guide for sampling petroleum cokes and calcined coke and a practice for preparing samples of petroleum coke are in the ASTM process of development and will be referenced when they are available. The sample preparation in Test Method D409 is adequate.
7.2 When a dedusting agent is present remove it in the manner required by the supplier of the calcined petroleum coke. The supplier knows what the added agent is, and should best know how to remove it. See Test Method D4930.
8. Procedure
8.1 The procedure (including apparatus) for raw petroleum coke and for calcined petroleum coke having no dedusting agent is the same as listed in Test Method D409.
