ISO 19242:2021
Rubber â Determination of total sulfur content by ion chromatography
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The tubular furnace combustion method is applicable for rubbers with sulfur content less than 0,1Â % as it is possible that the oxygen combustion flask method will not give sufficiently accurate results.
The oxygen combustion flask method is not applicable to rubbers containing a metal salt that forms an insoluble metal sulfate, such as barium sulfate (CASÂ 7727-43-7).