Flame photometry
Specimen preparation
Chemical analysis and testing
Vulcanized rubber
Vulcanized materials
Synthetic rubber
Natural rubber
Atomic absorption spectrophotometry
Absorption spectrophotometry
Testing conditions
Determination of content
Test equipment
Copper
Link: BS ISO 6101-1:2019 Rubber. Determination of metal content by atomic absorption spectrometry Determination of zinc content
Source: BSI Standards