The absorbance/opacity time change during separation can typically be fitted to a sigmoidal curve. The magnetophoretic behavior may then be defined by t 50 (the time when the difference between ...

Traditional magnetic separators, however, present a challenge: they generate a magnetic force that is very high near the side of the vessel closest to the magnet and decreases rapidly with distance.

DURHAM, N.C. -- A magnetic separation technique developed by researchers at Duke University's Pratt School of Engineering and Purdue University makes it relatively simple to sort through beads ...