From the city centre the easiest way is by bus lines 3, 16, 26, the closest bus stop is Wiosenna/Kawaleryjska. There is a 10-minute walk from the bus stop to the Institute of Chemistry (venue).
Reaching the venue from the bus stop: https://goo.gl/maps/Ww4ViY3j72T2
The Institute of Chemistry is the building on the right-hand side. The Conference room is on the ground floor, right wing of the building, room number 1014. There will be signs directing you.