Sartorius 93IEXS42DB-12--V Sartobind® Lab S Cation Exchange Membrane Absorbers, 2.1ml Bed Volume , 2 Absorbers/Unit - 08-049 | Genesee Scientific Sartorius 93IEXS42DB-12--V Sartobind® Lab S Cation Exchange Membrane Absorbers, 2.1ml Bed Volume , 2 Absorbers/Unit - 08-049 | Genesee Scientific