Yog hais tias qhov hnyav, kev puas tsuaj, deg inertness, thiab\/ lossis cov nqi pov tseg ntawm iav vial muaj kev txhawj xeeb, lub vial tsim los ntawm polypropylene yog ib qho kev xaiv rau kev txiav txim siab. Cov txiaj ntsig ntawm cov ntaub ntawv polypropylene suav nrog cov nqi qis qis, kev sib raug zoo nrog ntau cov kuab tshuaj, zoo tagnrho rau kev ua haujlwm nrog cov protein, zoo tagnrho rau cov ntawv thov ion chromatography, zoo tagnrho rau pH-sensitive qauv cia, thiab tshem tawm qhov xav tau ntawm cov khoom siv thaum lub sijhawm microsampling.