A gas sampling bubbler, consisting of easily assembled and replaceable glass and Teflon components, has been designed to replace prior designs, which are both expensive and fragile. The new bubbler has proved to be rugged, and easy to handle in the field. It is far less subject to damage than allglass designs, but equally efficient in pollutant collection. Instructions for its use in the field are presented. © 1969, American Chemical Society. All rights reserved.