Sartorius Vivaspin Turbo 4, 2 - 4 ml, PES, 30,000 MWCO, 25 pc/PAK

4 ml - 40 µl ultrafiltration unit with twin vertical membranes and sleek internal design for fastest sample concentration with highest recoveries. The pipette friendly dead stop pocket eliminates the risk of sample filtration to dryness and facilitates the recovery of the concentrate.