Dear colleagues,

when you notice that the small liquid nitrogen tanks are empty or almost empty in room 402A, please hang a refill (“täyttöön –kiitos”) tag to the neck of the tank. These tags are hanging on the wall of the room. These refill tanks have been empty several weeks in a row when we have needed them. The service only knows to refill the tanks if you attach the refill tag on them!

Thank you for your co-operation!

--minna