90.93 Standard confirmed Jan 13, 2022
ISO
ISO/TC 34/SC 3 Fruits and vegetables and their derived products
International Standard
67.080.01 Fruits, vegetables and derived products in general
The method consists in ashing of a test portion in a muffle furnace at 525+25 C, treating the ash obtained with hydrochloric acid, neutralizing with ammonia solution and determing of the value using an ammonia/ammonium chloride electrolyte. Copper, tin, lead and cadmium do not interfere.
PUBLISHED
ISO 6636-1:1986
90.93
Standard confirmed
Jan 13, 2022
ABANDON
ISO/DIS 6636-1