A Simple Laboratory Ozonizer KARL UHRIG The Texas Company, Beacon, New York
requires the services of someone versed in the art of glass blowing. Theaccompanying sketch illustrates an ozanizer which can easily be built by any one in a very short time from material ordinarily found in a laboratory. BYRNS,A. C., J. Am. Cham.Soc., 56,1088 (1934); HENNE, A small rat-tail file (four t o six inches long) is placed inside a A. L., ibid., 51, 2676 (1929); JACQUEMAIN, R.P.,AND G. BAL- piece of glass tubing of such a diameter as t o hold the file snugly (four t o six.millimete15). When dry oxygen is slowly passed through the tube while the tip of a high frequency vacuum tester (also known as Tesla coil) is held against the glass tube, part T I P OF H I G H of the oxygen is transformed into ozone. FREQUENCY VACUUM With this apparatus it was possible t o obtain .a two per cent TESTER yield of ozone a t an oxygen rate of six liters per hour. Rubber connections should be avoided in the exit part of the apparatus since rubber is destroyed quickly by ozone.
T
HE preparation of ozone is generally accomplished by the use of equipment not always readily available. While it is powible t o construct relatively simple ozonizers,' this usually
Bd1. SoC. chim., 3, i01 (1936); L~EBERXANN, L. V.. Chem. Ztg., 35, 734 (1911); LlsK, G. M., THISJOURNAL, 9, 2099 (1932).
LOUE, /
GLASS TUBING
\ SMALL RAT T A I L F I L E
