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N - A c e t y l - T h i o u r e a • A d e n o s i n e - 5 ' - t r i p h o s p h a t e , D i s o d i u m Salt 5-Bromosalicylaldehyde • o-Bromotoluene • 2,6-Dichlorophenol 2,6-Dichloroquinone-4-chloroimide • Diethyl Adipate • D M G Diglycolic Acid • Dimethyl Dihydroresorcinoi • p-Dinitrobenzene N , N ' - D i p h e n y l b e n z i d i n e • 2-Furylmethyl Ketone • Hippuric A c i d Menadione • Methyl Cyclohexanol • Naphthalhydroxamic Acid, N a O x a m i c A c i d • Phenyl-thiourea • Purine • Sodium Thioglycolate Taurine • Triphenyl Stibine • Uracil • Urea Nitrate • X y l i t o l
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PEQUANNOCK, N. J. QUARTZ SCIENTIFIC, INC.
MASS SPECTROMETRY
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Thin films-solid state materials. Bulk and trace analysts of all solid materials. Concentration gradients of diffused impurities. Resolution 5000. Sensitivity to parts per billion. GCA Technology Division, division of GCA Corporation, Bedford, Mass., Tel. (617) 275-9000. Attn: Director of Marketing
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Convenience-packaged mixture of lanthanum chelate of 3-aminomethylalizarin-NN-diacetic acid, buffers and stabilizers, affords accurate, sensitive and convenient quantitative colorimetric method for fluoride. 50 g. (for 100 detns.), with bibliography and complete instructions $15
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BURDiCK & JACKSON LABORATORIES, INC. eie i: MUSKEGON, MICHIGAN
2" 10 3-
989 Commercial St. Palo Alto, Calif. 94303
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34602 Lakeland Blvd. Eastlake, Ohio 44094
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ISOTOPES ATELEDYNE COMPANY
50 Van Buren Avenue, Westwood, N. J. 07675 Phone: (201) 664-7070
Manufacturers of chemical testing equipment and accessories since 1919
Write Dept. AC for free catalog
49442
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Applied Research Laboratories Direct Reading Spectrochemical Including: Model 25,000 Vacuum X-Ray Quantometer Model 29,000 Optical emission Quantometer Model 24,500 Recording Console Model 12,350 X-Ray Power Supply Model 5,700 Controlled Multisource unit Currently in operation. Available due to Laboratory Consolidation For information contact: J. Paul Wenti, A L L V A C , A Teledyne Co. P. O . Box 759, Monroe, North Carolina 28110, phone 704 289-4511.
(703) 471-1835
CABLE ADDRESS: SACTEX
Rates Available on R e q u e s t Analytical Chemistry
DIRECT READING X-RAY FLUORESCENT AND OPTICAL EMISSION SPECTROMETERS
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A n n e Forrest, Production M a n a g e r
600 S u m m e r St. S t a m f o r d , Conn. 06904 203-348-7S31
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ANALYTICAL CHEMISTRY
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