CNC-121 Blood Mixer (20 tubes)CNC-20 and CNC-30 are simple mixer instruments in laboratories. They are intended for mixing of standard test tubes, K3 EDTA tubes, reagent bottles and controls. After installing to the lab bench, just plug the power cord and Power ON. ATTENTION: Before the Power ON, place the sample tubes to between the rollers carefully. According to the international rules, wait about 15 minutes for ideal mixing. After Power OFF, pick up the sample tubes accordingly. ATTENTION: Do not touch the rollers during Power ON.