Bel-Art Rotary Pipette Stand; 94 Places, Polypropylene (F18957-0000) This unique stand holds up to of 94 pipettes and rotates on a central vertical axis for convenient selection The lower rotating disc consists of four concentric troughs with tapered sides and open bottoms which cradle the tips protectively The upper rotating disc has a grid pattern concentric with the bottom disc keeping the pipettes vertical Liquid draining off the pipette tip is retained on top of the stationary base by the outer rim A low center of gravity stabilizes the 48cm high stand on the 23cm diameter base, rotating disks are 18cm diameter, instructions for quick assembly included