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the dead time to can be determined by using either a homologous series (e.g. n-alkyl methyl ketones) or unretained organic compounds (e.g. thiourea or formamide).
timpul mort t0 poate fi determinat prin folosirea unei serii omoloage (de exemplu n-alchil metil cetone) sau compuși organici care nu se absorb pe coloană (de exemplu tioureea sau formamida).
