The BioPAT® Trace Membranes Dialysis for glucose/ lactate, with higher measuring range for the dialysis probe comes in a package of 5 pieces. The membranes are part of the BioPAT® Trace and Multi Trace system. In addition the membranes are ready-to-use, can easily be installed in the dialysis probe and replaced after every cultivation. The membrane can be used in Biostat STR®, Biostat B® and Biostat B-DCU® for higher glucose control (1-20 g/L). The membrane is absolutely required for the functionality.