ʻO ka anawaena o waho o ka paipu PEEK he 1/16”, kūpono i ka hapa nui o ka nānā ʻana i ka wai chromatography kiʻekiʻe. Hāʻawi ʻo Chromasir i ka 1/16 "OD PEEK tubing me ka ID 0.13mm, 0.18mm, 0.25mm, 0.5mm, 0.75mm a me 1mm no nā mea kūʻai aku koho. ʻO ke anawaena o loko a me waho ka ± 0.001” (0.03mm). E hāʻawi ʻia kahi ʻoki paipu me ka uku ʻole ke kauoha ʻia ka paipu PEEK ma luna o 5m.