ISO 2393:1994

Specifies compounding ingredients, preparation of materials (batch masses, weighing tolerances, carbon black conditioning), mixing equipment (mixing mill, internal mixer, miniature internal mixer), mixing procedures (mill mixing procedure, internal-mixer mixing procedure, miniature internal mixer mixing procedure), preparation of standard vulcanized sheets for dumb-bell test pieces (conditioning of batches, vulcanization equipment, vulcanization procedure), preparation of standard vulcanized discs for ring test pieces (conditioning of batches, vulcanization equipment, vulcanization procedure).