Normas ISO

Specification and qualification of welding procedures for metallic materials -- Qualification by adoption of a standard welding procedure specification

Food safety management systems -- Requirements for any organization in the food chain

Microbiology of the food chain -- Horizontal methods for surface sampling

Leather -- Chemical determination of chromic oxide content-- Part 3: Quantification by atomic absorption spectrometry

Leather -- Chemical determination of chromic oxide content-- Part 1: Quantification by titration

Leather -- Chemical tests -- Determination of matter soluble in dichloromethane and free fatty acid content