Nzira dzekuchenesa iyo sampuli vials (1)
Zvakakosha kwazvo kune sampuli yemuenzaniso kuchenesa, kana isu tisingakwanise kuchenesa, izvo zvichakanganisa kuyerwa kwenguva inotevera, saka tinofanira kugona nzira iyo nzira yekuchenesa ye chromatography vials.