After extraction, the remaining polymer and filler matrix is often subjected to pyrolysis or digestion to separate the organic polymer from the inorganic fillers (like carbon black or silica). JIS K 6258 provides the calculation methods to determine the ash content and the specific types of fillers used. This is crucial for reverse-engineering a rubber product or verifying that a supplier has used the correct grade of carbon black.
Since JIS K 6258 is identical to ISO 1817, many testing labs buy the ISO English version instead. However, if your customer specifically cites "JIS K 6258" on a drawing, you must buy the JIS version to match the title and reference number.
