LABORATORY
OF THE
MONTH
Diamond Alkali's T. R. Evans Research Center Surface area of a catalyst is measured on this Branauer, Emmett, & Teller (Β. Ε. Τ.) unit. The unit can determine catalyst areas varying between 10 sq. meters/g. and 1000 sq. meters/g. The equipment is applied to the development of catalysts for effi cient conversion of HCI to CU and H 9 ΓΛ IAMOND ALKALI'S RESEARCH LABORATORY is located about
*—^ 35 miles from Cleveland on a 30-acre clearing in an 800acre wooded site. T h e T. R. Evans Research Center in Con cord township, Ohio, commands an impressive view overlook ing t h e suburban section of Lake County with Lake Erie in the distance. Dedicated on October 6, 1961, the Center is t h e focal point of Diamond's research activities, and it serves t h e company on a nationwide basis. T h e research activities of the l a b are concentrated in five main areas—agricultural chemicals with special emphasis on pesticides a n d their anal ysis, plastics such as vinyl chloride, high temperature-resist ant polymers, organics, especially chlorinated organics, and nuclear fuels. The analytical section makes u p about 18% of the total technical personnel working directly on projects and funda mental research. T h e section develops methods of analysis and, depending on t h e complexity and instrument require ments, m a y continue to support the project within its own area. Otherwise the procedure and equipment are trans ferred to the research or pilot plant areas where chemists or engineers become responsible for the analytical data needed. The analytical section supports other basic research proj ects b y such techniques as electron microscopy; x-ray fluo rescence and diffraction; emission, infrared, and mass spec trometry ; chromatography ; and micro- a n d macro-wet chem ical procedures. There is a close liaison between the analytical group and workers on specific projects. When necessary, personnel are temporarily transferred to maintain the progress of a project via the technique of t h e critical path. The Center consists of three main buildings—the researchadministration building, t h e process development lab, a n d a high pressure lab. T h e research-administration building con tains 61 lab modules which have movable metal partitions, thus making it easy to reapportion work space. T h e labs are situated back to back, separated b y a common service corridor which contains all the needed services. The 35,000 sq. ft. process lab houses eight 12' X 24' lab modules, a distillation lab, a n d two pilot labs. T h e high pressure lab has six 6 X 9 pressure labs of reinforced concrete. VOL. 35, NO. 7, JUNE 1963 ·
107 A
Gas chromatograph-coulometric titrator, sensitive only to C l ~ , is used to analyze chloride pesticide residues in agricultural products. The instrument determines chloride ions in pesticide residues in parts-per-billion. Residue analysis helps determine how pesticides are absorbed in agricultural products, thereby aiding in extending the range of products which can safely be sprayed with pesticides. The amount of pesticide residue which can be tolerated is strictly limited by FDA regulations
Experimental polymers are evaluated on this lab size 1 " screw extruder. The extruder has been modified to accept temperature and pressure probes along the barrel and die. It is used to determine optimum conditions for extruding a polymer as well as most satisfactory polymer compositions. The extruder can handle polymer samples as small as one pound
Chromized stee! specimens are tested for hardness on this Tukon hardness tester. The chromized steel is intended for possible use in automobile mufflers. Hardness tests are also run on various metallic and ceramic-type coating particles which are fabricated into elements for fuel reactors. These particles must be hard in order to withstand pressures resulting from fabrication. The instrument can be adapted for direct measurement of thickness of metal coatings on steels in the range 0.1 to 0.5 mil
OUTSTIRS OUTLASTS OUTSELLS
LABORATORY OF THE MONTH
The research-administration building at Diamond Alkali Company's T. R. Evans research center is located on a 30-acre clearing in Concord township, Ohio
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$2525 H I G H TORQUE [ Stirs thickest liquids. Won't stall, won't burn out.
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The degree of crystallinity of polymers such as PVC and PVA is determined by x-ray diffraction. The equipment is also used to identify the structures of impurities in anode scales from chlorine electrolytic cells; and molecular structure of chromium catalysts under development can be evaluated on this equipment
EXTRA LIFE MOTOR N o t a stock m o t o r , but special heavy duty Waco motor. Many labs operate this stirrer 24 hours a day, 7 days a week, month after month. | j i m U l £ m j j | Cools motor, permits continuous use. Outlasts others, saves replacement. ^^Jjj^|j^y|J2j^^L^^^£9 Induction motor is safe for stirring flammables.
type
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Minor impurities such as acetylene and vinylidene chloride are determined in a vinyl chloride monomer with the mass spectrometer. It is also used for detailed studies of new polymers. The infrared apparatus is used to characterize organic compounds such as benzyl chloride and its derivatives. An intense absorption band near 1266 c m . - 1 has proved useful in structural studies of chlorinated aromatic compounds
Waco stirrer with brass mounting rod and 6 foot cord $25,25
N-10235-1 Stirrer chuck for Waco stirrer for stirring rods $ 1.65
Write for free Catalog No. N-2. describing 38 different stirrers for every stirring job.
WILKENS-ANDERSON CO. 4525 W. DIVISION ST.
CHICAGO 5 1 , ILL.
Circle No. 1 on Readers' Service Card VOL. 3 5 , NO. 7, JUNE 1963
·
109 A
Laboratory filter paper can per form at its best only if it offers the right combination of flow, retention, and wet strength characteristics for the specific need. This E-D Filter Paper Selector Chart is designed to help you in choosing the right filter paper for any application. Every number on the chart repre sents a grade of E-D qualitative or quantitative filter. Its position on the chart is determined by that grade's particularfiow and retention charac teristics. Numbers appearing to the right of the line indicate most widely used papers; those appearing to the left indicate grades whose combi nation of characteristics lend them selves to special-purpose use.
// can help you choose the right filter for every job! /
900 FLOW RATE AN DRETEN riONGU EATOl· -DIKEM IN FILTE iPAPER
800 —
Grades
DE-
/
Suitable or Orgar c
non-aq jeous
/
liq ids.
.700 -
500 - -
140
/
40(1 -
^617-91 ? 1 1 1
301) -
330/
953
-7
615-915·
15
/
200 —
6' 1-918
A
/
//
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518
;ange of ι rades sui able or coarse gelatinoi s irecipitati s AI (OH 3
6 2 9 ' / 5 Î9
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,
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/ 50 i
/ 609 607 / 6 3**70-513
- -
nedium V pes of pr flg NH., F O., S;02,
/
50 • —
cipitates CA (C;0« etc.
/
40 -
/ 348/ _6C8.
HOW TO READ T H I S C H A R T
A b o u t quality — E-D has long been the nation's leading producer of filter papers for the laboratory and for industry — and quality is the reason. E-D safeguards paper qual ity, purity and uniformity every inch of the way from pu I p to finished prod uct. Three times every hour, during the entire paper making process, quality control technicians make ex acting tests for rapidity, wet and dry strength, air resistance, weight and thickness. To make sure of quality, make sure you specify E-D. For addi tional information, please write
THE ΕΑΤΟΝ-DIKEMAN COMPANY Filtertown, Mount Holly Springs, Pa.
/ 248 *80*
/
Ra ge of gr; des su able for fir precipit tes B< 30., PbS j . etc.
900 series numbers indicate extra wet-strength, resin treated papers 500 series numbers indicate fluted circles * — quantitative filter paper ** — suitable for chromatography
/ 9 ! 1-550 to -L-
Chromatography and Electropho resis — Included in E-D's complete line of quality filter papers are sev eral grades ideally suited to chro matography and electrophoresis. For chromatography, see #613, jfl, #248, and #629. For electrophoresis, see #301 and #320.
/
20 —
À
Qualitative and Quantitative Filters — Most E-D grades are qualitative filters. Three, however, are quanti tative grades: #60 (fast), #70 (Medi um) and #80 (slow). Ash content of each E-D quantitative filter is a full 25% less than that called for in ASTM and government regulations.
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PAPER S I Z E S : Laboratory Filter Paper (plain circles): 5.5, 7.5, 9, 11, 12.5, 15, 18.5, 19, 20.5, 25, 25.5, and 33 centimeters. Laboratory Filter Paper (fluted): 11, 12.5, 15, 18.5, 24, 27, 32, 33, 38.5, and 50 centimeters. Chromatography Paper: In sheets — 1S1A" χ 221//'· In rolls — 600' long by Vi", 1", or l'/i" width. Electrophoresis Paper: In sheets — 18'/4" χ 22i4".
RFLATIVF PORE SIZE OF GRADES
Other sizes available on request.
Circle No. 190 on Readers' Service Card
VOL. 35, NO- 7, JUNE 1963
·
111 A
