When visiting the VirtaMed offices in Schlieren, Zurich:
Take any train from the airport train station to Zurich HB (main station). Then follow the below directions from Zurich HB to Schlieren.
By train from Zurich main station:
The S12 train toward Brugg runs every 30 minutes from platform 41/42 (9 minutes, 3 stops).
The S11 train toward Dietikon runs every 30 minutes from platform 41/42 (9 minutes, 3 stops).
Disembark at Schlieren and pass beneath the tracks toward Industrie. Exit right from the station and walk straight, parallel to the tracks, for roughly two minutes until you reach the first parking lot on your left.
Rütistrasse 12 will be at the far end of the parking lot on the right hand side.