Ii-vials zesampulu, zikwabizwa ngokuba ziibhotile zokugcina iikhemikhali, okanye iibhotile eziphathekayo, zilungele imichiza ephakathi, kunye nezinye iimveliso, kunye nokuhamba kweemveliso zexesha elide kunye nokuhamba kweemveliso zexesha elide. Inkqubo yemveliso yokuphumeza i-Supric Carbon (TOC) yeebhotile igcinwe icocekile ukuqinisekisa ukuba azifaki naliphi na i-carbon ye-organic kwisampulu. Oku kubaluleke ngakumbi kuhlalutyo lwe-TOC, apho amanqanaba aphezulu alandelela ungcoliseko unokuchaphazela iziphumo.