An outline of the history of odor measurement methods ina mentioned in this paper. The syringe method was widely used about 30 years ago. This method, however, had the several disadvantages. In order to eliminate these disadvantages，the syringe was replaced by a plastic bag (polyester film) with a 3 liter volume and any preconception of the panel was removed by adopting a triangle test. This new method (Triangle Odor Bag Method) was published for the first 1972 by the author. The outline, procedure and precision of this method were printed in this paper.
The History of Odour Measurement in Japan
Scentroid Odour Regulation