มอก. 2652 เล่ม 1-2565

Scope (English)

This standard specifies an atomic absorption spectrometric method for the determination of the zinc content. The method is applicable to raw rubber and rubber products having zinc contents above or equal to 0.05% mass ratio. Zinc contents below this limit can be determined, provided that suitable adjustments are made to the mass of the test portion and/or to the concentrations of the solutions used. The use of the standard additions method can lower the bottom limit of detection.