ZipCombo Centrifuge. The JorVet ZipCombo is a multi-function micro-centrifuge available with a choice of rotors to meet all your micro-centrifugation needs in one unit. The flat hematocrit rotor spins shorter capillary tubes and eliminates angled separation lines, clay blow-outs, and broken tubes. The six place microtube rotor spins 1.5/2.0ml tubes for serum and urine separations and comes with adapters for other sized tubes. Designed with robust construction for long life, the Zip Combo is well-suited to accomplish blood and urine sepa- rations, and microfiltrations. The small footprint makes the JorVet ZipCombo centrifuge the perfect addition to any clinic or lab.