Aijiren inopa pre-yakacheneswa 40 ml girazi vials yakasimbiswa kune yakazara organic carbon (toc vials). Isu tinopa vials vials Certified kuti iite zvikamu zvisingasviki gumi pamabhiriyoni (PPB) uye isingasviki zvikamu zviviri pamabhiriyoni (PPB) yekushandisa mumishonga yemishonga uye yebhotifilogy. Muenzaniso wekuchengetedza, anozivikanwa seMakemikari ekuchengetedza mabhodhoro, kana kuti zviumbwa zvechisimba, gadziriro dzakakura, zvigadzirwa, zvakakodzera kuti zviite zvekutakura zvigadzirwa, zvine chekuita zvakanyanya.