Hoʻohana pinepine ʻia ʻo 9 mm PP septa i nā noi hoʻokolohua, me ka chromatography, ka waiho ʻana o ka laʻana, a me ka nānā ʻana i ka laʻana. Hāʻawi kēia mau septa i kahi pale hilinaʻi a maikaʻi ma waena o ka hāpana a me ke kaiapuni. ʻO PP septa, a i ʻole polypropylene septa, he ʻano mea hoʻopaʻa sila i hoʻohana ʻia i nā noi hoʻokolohua, ʻo ia hoʻi i ka chromatography a me ka nānā ʻana. Hana ʻia kēia mau septa mai ka polypropylene, kahi polymer kūpaʻa kemika a me ka thermally stable.