TYPICAL ULTRAVIOLET SPECTRA FOR MERCK SPECTROPHOTOMETRY SOLVENTS Methyl Alcohol Anhydrous Reagent (07143) Isopropyl Alcohol Reagent (72961) ******** Methylene Chloride Reagent (73891) Chloroform Reagent (20902) Carbon Tetrachloride Reagent (18392) Arrows Show Wavelength at Cut-Off Point Spectrophotometer Used—Cary Model 14 You can have complete confidence in the performance of Merck Spectrophotometric Solvents, since the spectra shown are actual, not merely theoretical. As always, you cancontinuetolook to Merck reagents for dependable reproducibility. To all present and potential users of spectro photometers, Merck has a free "Spectrosolvents Kit" waiting for you at your local distributor. So pay him a visit soon while the supply lasts.
MERCK LABORATORY CHEMICALS D i s t r i b u t e d by QUINTON COMPANY, Division of Merck & Co., Inc., Rahway, N.J. Circle Νo. 63 on Readers' Service Card 48 A
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ANALYTICAL CHEMISTRY
