Donaldson D, Grabi J
J Can Dent Assoc. 1989 Jul;55(7):541-3.
Five scavenging systems were installed in 10 dental office and the levels of nitrous oxide were closely monitored for each. While the readings were higher than the previous non-clinical study, all appeared to be reasonably efficient. The various factors which caused increases in background levels were also recorded in the investigation.
