ISO 6257:2002 PDF

Scope: This International Standard specifies methods for sampling and preparing samples prior to testing of binder pitch used in the manufacture of electrodes for the electrolytic production of aluminium. These methods are applicable to grades of pitch in liquid or solid form, the latter having softening points higher than 30 ℃ (determined according to the method specified in ISO 5940), in bulk, or in a number of containers making up one batch at sites of manufacture, storage, or delivery. Sampling methods and sampling plans for large consignments, or lots, of pitch in liquid form during the loading and unloading of ships are included.

ISO 6257:2002 Referenced Document

ISO 3165 Sampling of chemical products for industrial use; Safety in sampling
ISO 5940 Carbonaceous materials for the production of aluminium; Pitch for electrodes; Determination of softening point by the ring-and-ball method

2002 ISO 6257:2002 Carbonaceous materials used in the production of aluminium - Pitch for electrodes - Sampling
1980 ISO 6257:1980 Carbonaceous materials used in the production of aluminium; Pitch for electrodes; Sampling