Rotary Evapo-Mix
BUCHLER INSTRUMENT
NEW BOOKS
Evaporate Multiple Fraction Cuts Directly From Test Tubes in 10-20 Minutes! FEATURES: *
Internal variable voltage transformer controls vibration rate.
*
Simultaneously evaporates 10 test-tubes or centrifuge tubes, 1 6 - 2 5 m m . diameter.
*
Connects to efficient water aspirator as vacuum source Automatic thermoregulator controls tempera ture of water bath. Controlled circular vibration creates deep swirling to prevent " b u m p i n g " during heating under v a c u u m .
* *
PRICE COMPLETE w i t h Pyrex Manifold
$436.00 with Stainless Steel Manifold
$444.00 Request Bulletin Α-3-2Ί00Α
for details
BUCHLER INSTRUMENT B U C H L E R I N S T R U M E N T S , INC. LABORATORY
APPARATUS
PRECISION INSTRUMENTS or call N.Y.C. direct LO 3 - 7 8 4 4
Circle No. 99 on Readers' Service Card
IDEAL PRESS FORMING KBr PELLETS • Pellets for X - R a y * and Other Analysis Shown—20 Ton Lab Press with New Compact Power Unit and accurate
Plastic, Ceramic and Metal Forming • General Lab Use
handwheel adjustment. and
50
Also 30
ton models.
Heating
platens optional.
Accessories for temperature, pressure, extrusion testing units, etc. are available For all models
WRITE
FOR BULLETIN —DEPT.
L O O M IS
E N G I N E E R I N G Circle No. 59 on Readers' Service Card
·
ANALYTICAL CHEMISTRY
* For better results use Loom is 1 V i * precision x-ray petlel die
A
CApitcl 6 8 6 6 0
64 A
Milton H. Aronson, Robert C. Nel son, editors, ii -\- 134 pages. Instru ments Publishing Co., 845 Ridge Ave., Pittsburgh, Pa. 1964- Paperbound. $2.
Residue Reviews. Vol 5. Francis A. Gunther, editor. 176 pages. Aca demic Press, Inc., Ill Fifth Ave., New York 3, Ν. Υ. 1964. $6.60.
for
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Viscosity Measurement and Control.
The theory and practice of viscosity measurements are treated in this book. After an introduction into the subject by way of definitions, this book pre sents a practical directory of commer cially available viscometers. Chap ters consider manual time-measuring viscometers, manual force viscometers, automatic time viscometers, gel-time viscometers, calibration of kinematic viscometers, viscometer calibrating fluids, a falling-ball viscometer, vis cosity nomographs, a viscosity conver sion chart, and an index of manufac turers.
1 3 2 7 16th Street, Fort Lee, New Jersey Phone 2 0 1 - 9 4 5 - 1 1 8 8
voted to consideration of the antiox idant effects in biochemistry and phys iology, 22 pages discuss the coenzyme Q group (ubiquinones), and 81 pages are included under the title "Gas Chromatography of Lipids." This re view is authored by E. C. Horning, A. Karmen, and C. C. Sweeley. Included are sections covering principles and terminology, packed and capillary col umn chromatography, radioactivity measurements, preparative gas chro matography and applications. The ex tensive reference list contains both general and specific items.
&
M F G .
CO.
CALDWELL, NEW JERSEY
Volume 5 of this continuing series devoted to "Residue Reviews—Resi dues of Pesticides and Other Foreign Chemicals in Foods and Feeds" con tains the papers presented at the 144th National ACS Meeting. This sympo sium, Instrumentation for the Detec tion and Determination of Pesticides and Their Residues in Food, was spon sored by the Pesticides Subdivision of the ACS Division of Agriculture and Food Chemistry, and was held April 1, 1963, in Los Angeles, Calif. Papers and authors included in the volume are: Special features in the analysis of pesticide residues: Residue analysis and food control, H Frehse; Gas chromatography using an electron absorption detector, L. K. Gaston; Quantitative determination of pesti cide residues by electron absorption chromatography : Characteristics of the detector, S. J. Clark; Selective de-
