Figure 3
From: A portable negative pressure unit reduces bone cement fumes in a simulated operating room

Detected VOC levels before during and after mixing are shown for the control (no vacuum) and for two positions of the vacuum nozzle, the first being 20 cm above and 8 cm away from the bowl, and the second being 36 cm above and away from the bowl. A fresh batch of bone cement was mixed for each condition. The vertical lines indicate the start and end of mixing.