The BioPAT® Fundalux probe has a 12 mm probe connection, an optical path lenght of 10mm and an insertion length of 225 mm. The BioPAT® Fundalux probe is an absorption-based photometric probe that uses light from 840 nm to 910 nm to measure the turbidity in bioreactors and fermenters. This probe is applicable for a 2L Univessel®.