Repetition only possible after re-enrolling for the course unit.
Additional information on mode of examination
At the end of the lab work a written final report (in english or german) has to be submitted and the work has to be presented in a seminar (english) to the research group. The evalution is based on the performance in the lab, the written final report and the presentation in the seminar. More information you can find under http://www.phys.ethz.ch/phys/students/master/sem_arb_exp.