NEWS
INCREASED PRODUCTION THE GEORGIA MARBLE COM PANY—fhe most efficient sfone and marble producer in the U.S.A.—is now in full charge of p r o d u c t i o n in the ALBERENE STONE quarries and mills at Schuyler, Va. Greatly stepped-up output now permits us to say, "Let's talk immediate deliveries!"
Immediate Deliveries! Alberene Stone can be shipped normally in 60 days—or even sooner to meet very special circumstances. We can schedule our deliveries to meet all reasonable requirements of contractors and laboratory equipment manufacturers. Further, the supply of Alberene Stone is inexhaustible. New veins are constantly being located in company owned quarries in Albemarle and Nelson Counties, Va. Alberene Stone is the only natural silicate stone with the surface that goes all the way thru. It can be cut, drilled, tongueand-grooved, refinished and reused almost indefinitely — while providing the best obtainable chemical resistance! For information and technical assistance, address: Alberene Stone Corporation, 419 Fourth Avenue, New York 16, Ν. Υ.
ALBERENE STONE provides
LOW ABSORBENCY
protection
For further information, circle number 34 A on Readers' Service Card, page 87 A 34 A
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ANALYTICAL CHEMISTRY
can be made, continues unabated. The two-day session on this subject, held jointly with the Division of Petrolem Chemistry, drew substantial numbers of analysts. In addition to presenting a fair cross section of types of work going on in industry and academic institutions, the symposium had a distinct international flavor with several papers authored or coauthored by several foreign speakers. These included: A. I. M. Keulemans, Koninklije Shell Lab of Holland; D. H. Desty, R. C. Pitkethly and C. L. A. Harbourn of the British Petroleum Co. ; J. II. Purnell, Unwersity of Cambridge, England; A. T. James, National In stitute for Medical Research, England; and D. Ambrose, Department of Sci ences and Research, England. Simple, stable discharge detectors with sensitivities 10,000 times greater than existing ones were described in a report by Pitkethly (presented by Desty). The detector features a homo geneous non-sputtering cathode with a large surface and a relatively small anode to cathode spacing. Using a modified neon indicator lamp, paraffin hydrocarbons in nitrogen were readily detected at concentration of 1 in 10 million. Applications in trace analysis are envisioned. New time of flight mass spectrometers are capable of scanning a mass spectrum from mass 1 to above 60 and presenting a new spectrum on an oscilloscope 2000 times a second, said R. S. Gohlke, Dow Chemical Co. By coupling to a vapor phase chromatography unit, components can be identified as they leave the chro matographic column. A new high temperature unit can be operated up to 300° C , J. S. Fawcett, Fisher Scientific Co. reported. The apparatus has two thermostatted cham bers, one for the analytical column and the other for the thermal conductivity cell. A "flash" evaporator is an inte gral part of the sample injection sys tem. Application of gas chromatography to several fields including food, medicine and petroleum refining were described. Quantitative and qualitative analysis of fatty acids in the range Ci to C2o, for example, were described by William Insull, Rockefeller Institute for Medical Research. Two types of columns are required to cover this range. Better results cheaper in petroleum analyses is the characterization of gas chromatographic techniques given by W. A. Dietz, B. F. Dudenbostel, Jr. and C. W. Skarstrom, Esso Research and Engineering Co. In two papers these authors stated that new methods not only reduce time but make possible analvses which cannot be carried out
