Apparatus with vacuum registering balance f o r studying surface and porosity of catalysts and adsorbents by gas or vapor adsorption. Lomonosov, Moscow State University
LABORATORY OF THE MONTH Soviet Analytical Instruments Belgium. More t h a n anything else the Sputniks have given Soviet B RUSSELS, science new prestige. So it isn't surprising t h a t t h e Sputnik display is one of the most crowded in t h e USSR Pavilion a t the Brussels Exposition. Less spectacular t o t h e general public, but giving a good indication of the scientific accomplishments of the Soviet Union, is the variety of scientific instruments shown. M o s t of these, as far as analytical instruments are concerned, are not in the Soviet Pavilion b u t in t h e Palace of Science. This is an international exhibit devoted to fundamental science, with exhibits by many countries including t h e United States and the USSR. Exhibits are grouped into four sections: atom, crystal, molecule, and living cell. They give excellent demonstrations to laymen—and scientists too—of such things as t h e principles of various high energy particle accelerators, crystal lattices, molecular structure of polymers, enzyme action, and various biochemical reactions. T h e USSR has contributed some excellent displays of this sort. T h e exhibit where most of these photographs were taken shows how various spectrophotometers and spectrographs a r e used. Some of t h e instruments a r e marked as contributions b y certain research institutes. Others are marked with model numbers, implying t h a t they are produced on a regular basis. Judging from their appearance, t h e Soviet laboratories have a wide variety of analytical instruments a t their command. N o t e : T h e London Editor of t h e ACS Applied Publications secured these photos of Soviet instrumentation. T h e editors feel that a pictorial presentation of such instrumentation, even though not t h e usual Laboratory of t h e M o n t h , would be of interest t o readers of ANALYTICAL C H E M I S T R Y .
Partial view of the Soviet instrumentation display VOL. 3 0 , N O . 8, AUGUST 1958
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51 A
Apparatus for determining hydrogen in metals by isotopic dilution with deuterium, followed by a spectrographic analysis of the mixture. One or 2 cc. of hydrogen per kilogram can be measured with a root mean error of less than I0°/o. Leningrad State University
Russian infrared recording spectrophotometer
Mass spectrograph. Nonuniform magnetic field. Resolving power, up to 6000. USSR Academy of Sciences 52
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ANALYTICAL CHEMISTRY
Spectrophotometer ( M o d e l DFS-12) for wave lengths of 3600 to 6500 A . Monochromator contains two gratings of 600 rulings per millimeter. Linear dispersion (inverse) for first order spectra, 54 A . per mm.
WACO REFRIGERATED
BATH
Soviet phase fluorometer, M o d e l EF-39, was shown in t h e Palace of Science
LAB OF THE MONTH
• TEMPERATURES TO
30 C
• NO EXPOSED COILS • LARGE CAPACITY REFRIGERA TION
Quartz optical spectrograph: 2000 to 6000 A . A r c g e n e r a t o r , M o d e l ISP-28. Right, spectroprojector f o r observing spectrograms, M o d e l SPP-I
WALL COOLING is employed rather than a coil! Heat transfer is spread over a large area, and consequently there is a minimum temperature differential. Faster cooling or heating. Wide opening. No room is lost to a coil and diffuser panel. VERSATILE WACO BATH is used as a reaction site for organic syntheses, as a bath for the determination of physical con stants, for bio-chemical procedures, ASTM tests, etc., for supplying constant tempera ture circulant to viscosimeters, refractometers, etc. A 3^ h . p . hermetically sealed compressor is used. An easily adjustable magnetic-setting mercury thermoregulator provides temperature control of ± .05° C . Heating element permits operation above room temperature. Inside dimensions are 2 9 " long X 14" wide X 10" d e e p . All controls are conven iently arranged at one e n d . #AC884 W A C O Refrigerated 115 volt, 60 cycle current
Bath, for $890.00
#AC884-1 WACO Refrigerated Bath, same as #384 but with built-in centrif ugal pump, delivering 5 g.p.m. at zero head $920.00 Many modifications have b e e n supplied. W e CUSTOM BUILD to YOUR specific application a n d YOUR requirements, as to dimensions and operating range. WRITE FOR BULLETIN AC-8. LABORATORY SUPPLIES A N D EQUIPMENT G r a t i n g s p e c t r o g r a p h ( M o d e l D F S - 1 3 ) f o r w a v e lengths of 2 0 0 0 t o 10,000 A . 1200 or 6 0 0 rulings per m i l l i m e t e r . Focal length of o b j e c t i v e mirror, 4 meters. A p e r t u r e r a t i o , 1:42.
WILKENS-ANDERSON CO. 4525 W . DIVISION ST.
CHICAGO 5 1 , ILL
Circle No. 53 A on Readers' Service Card, page 77 λ
VOL. 3 0 , N O . 8, AUGUST 1 9 5 8
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53 A
