EBERBACH AUTOFRACTOR® FOR AUTOMATIC FRACTION COLLECTION

The new Eberbach explosion-proof AUTO­FRACTOR collects liquid fractions in col­umn chromatography of the absorption, ion exchange, or partition type. It is a volu­metric syphoning type employing the force of gravity. A set of 6 syphons is provided and are adjustable up or down to correct for rate of flow from the column. No elec­trical power is required, providing greater safety when used in the presence of vola­tile solvents. The absence of electrical components minimizes the problem of maintenance and adjustment. Catalog No. 1700 for aqueous solutions and catalog No. 1705 for organic solvents, each $475.00. Request Bulletin 700

P.O. BOX 1024 Eberbach ANN ARBOR, MICHIGAN

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GLASS ABSORPTION CELLS OF FINE QUALITY

KLETT

Klett-Summerson Photoelectric Colorimeters -Colorimeters - Nephelometers - Fluorimeters Bio-Colorimeters - Comparators - Glass Stand­

ards - Glass Cell - Klett Reagents KLETT MANUFACTURING CO., INC . 179 E A S T 8 7 T H S T R E E T N E W Y O R K N . Y .

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4 2 A • ANALYTICAL CHEMISTRY