The ASI 35 from Pfeiffer Vacuum is a leak detection solution dedicated to leak detection machine builders, system integrators and end-users. This unit combines high reliability and repeatability with maximum up-time. The ASI 35 provides very good performance for tracer gases helium and hydrogen in integral and localizing test procedures or a combination of both. Therefore, it offers flexibility in testing of demanding samples with minimum signal background and crosstalk providing for fast overall cycle times.