ABSTRACT
Around the late 1950s and early 1960s, Lovelock [1] developed a family of four detectors, starting with the argon ionization detector and ending with the electron capture detector [2], The first of the family was called the macro argon detector (for reasons that will shortly become apparent) and although it is rarely used in GC today, it will be briefly described, as it is an extremely sensitive detector and its function has a bearing on that of the electron capture detector, which is a very important contemporary detector.
