ʻO ke koho o nā vialsompler Vials e like me ka liʻiliʻi o nā mea i hoʻohālikelikeʻia i keʻano o nā mea hana chromatatory he nui. Eia nō naʻe, nā koho hewa hewa o HPLC a iʻole GC Vial, CAPS, e alakaʻi maikaʻi a me nā mea hoʻowalewale a iʻole ka hanaʻana i ka hana hoʻokolohua.