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INDUSTRY-WIDE APPLICATIONS PROVE ACCEPTANCEOF BARBER-COLMAN GAS CHROMATOGRAPHS

The Chromatogram Is The ProofThis typical chromatogram is from arun of Cj-C5 alcohols on a Barber-Colman Gas Chromatograph with a100 foot, stainless steel, capillary col-umn. Column coating was ArmeenSD. Column temperature: 600C. Celltemperature: 1 1 O°C. Flash heater tem-perature: 140°C. Pressure: 15 psi.

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Play major role in research anddevelopment; quality control

Since their announcement a short timeago, Barber-Colman Gas Chromato-graphy systems have found their wayinto many industrial and research labo-ratories. Following are a few caseswhich show the magnitude of accept-ance accorded these chromatographs.New techniques and accessory itemsare constantly being developed byBarber-Colman. . . the primary reasonfor the versatility and the fast-growingpopularity of Barber-Colman chroma-tographs.

Synthetic CoffeeA leading U.S. research institute hasrecently completed a project whichmay well point the way to a cup of syn-thetic coffee comparable in flavor andaroma to the real thing. Because aromais responsible for from 80% to 90% ofthe flavor sensations received fromcoffee, it is necessary to separate thevolatiles from brewed coffee in orderto determine the components that pro-duce the aroma and flavor. A truly syn-thetic cup of coffee in the future isextremely likely. Barber-Colman chro-matographs are being used in tracework of this type.

Hydrocarbons in Air. . .A major American chemical companyhas succeeded in isolating as few as 15parts per billion of some hydrocarbonsin air with a chromatograph equippedwith an argon ionization detector. Thecompany's scientists achieved with thissensitivity with a modified Barber-Colman ionization detector. The stand-ard 80-microcurie radium source in thedetector was replaced with a one-curietritium source. The tritium is absorbedin a titanium film on a stainless steelfoil. After exciting the argon carriergas used in the detector, the excitedargon atoms impart their energy to

molecules in the sample having ioniza.tion potentials of less than 11.6 e.v.,the energy of the argon metastablestate. Since the ionization potential ofair exceeds 11.6 e.v., the detector isrelatively insensitive to air.

Perfumed Fragrances...One of the world's foremost creatorsand producers of perfumed fragrancesis using Barber-Colman Gas Chroma-tography for quality control to assurefragrance purity and uniformity. Theextreme sensitivity of the chromato-graph makes possible the separationand graphic study of the many compo-nents that go to make a fragrance.

Wheelco Model 20...Compact and portable for laboratoryand industrial use. Designed to acceptcapillary or coiled packed columns.The extreme flexibility of Barber-Colman Gas Chromatographs providesqualitative and quantitative chemicalanalysis due to the many features andaccessories offered . . .'argon or flameionization detectors, separate tempera-ture controls for column heater, ad-justable sample splitters, effluent split.ters, events markers and many more.Investigate the features of Barber-Col-man Gas Chromatographs that are sig-nificant to your requirements. Contactyour nearest Barber-Colman sales andservice office.

Wheelco Instruments DivisionB AR B E R - Co L M AN C O M PA N Y

Dept. F, 1 51 31 Rock Street, Rockford, Illinois, U.S.A.BARBER-COLMAN of CANADA, Ltd., Dept. F, Toronto & Montreal - Export Agent: Ad. Auriema, Inc. N.Y.

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