Which pair of metrological standards establish methods for elemental composition of SWCNTs?

Which pair of metrological standards establish methods for elemental composition of SWCNTs? Correct Answer ISO/TS 10797 and ISO/TS 10798

There are two main metrological standards ISO/TS 10797 and ISO/TS 10798 that are applicable to SWCNTs. These standards establish methods used for characterizing the elemental composition and morphology of the nanotubes. They are determined using scanning electron microscopy and transmission electron microscopy respectively, along with energy dispersive X-ray spectrometry analysis.
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