Chromatography vial o se fagu tioata o lo'o fa'aaogaina e masini fa'ata'ita'i ma mea fa'ata'ita'i ulu e pei ole chromatography vai, chromatography gas, mass spectrometry, ma isi mo le chromatographic sampling otometi. O ona manaʻoga faʻavae o le saʻo saʻo, gafatia e tatalia se faʻamalosi, lelei faʻamaufaʻailoga, ma leai se adsorption i faʻataʻitaʻiga.