A NOTE ON THE TESTING OF DISINFECTANTS

IN VIEW of the fact that the International Committee on The Standardization of Disinfectants, appointed at the last meeting of the International Congress on Applied Chemistry, cannot meet this year, owing to the war, and that this may entail a further delay of three years, we desire to call attention to one or two points which have arisen since the publication of our paper on "Approved Technique of The Rideal-Walker Test," * and to submit the following suggestions as addenda to the paper referred to. First, in view of the difficulty experienced by some workers not familiar with the technique of the chemical laboratory, we sliggest that a burette, such as that described by Hermann W. Mahr, of the Board of Estimate and Apportionment, New York, pan be adopted in place of the dropping pipette. On the other hand, we know many workers who have a decided preference for the dropping pipette originally used by ourselve's and who do not see the necessity for changing this detail of the technique.