Catherine: So how's your new toy working out?
Warrick: It's been downsized.
Catherine: Bummer. I know how you wanted to see that thing work.
Warrick: Well, it's the same difference, really. Air is drawn into the last tube the chalk absorbs the chemicals from the air. And mass spec will break it down at the lab.
Catherine: So why did you need the expensive one in the first place?
Warrick: 'Cause it was cool. (Cath smiles at his honesty)