... reverse it several times every 2----3 min.3, Magnetic separation:hold the EP tube in the left hand, hold ... .4, Put the EP tube on a normal non-magnetic tube rack, add in 600µL washing liquid, point ... 2~8°C. For instant use, rectangular magnet or magnetic frame can be used to do the separation in ... powder. The grinding takes about 3min. Then get 50mg of the embryo and put it into a 1.5ml EP tube. Magnetic ...