![Page 1: THE ETMEEEF3= s1E- II · 2005-07-13 · 1 gram $10.00 10 grams- 25.00 100 grams-120.00 H.SENDN.FORCHEMICALOUR NEWCATALOGUECO. 1651-18th St. Santa Monica, California P-HOTOVOLT Line-Operated](https://reader035.vdocument.in/reader035/viewer/2022070912/5fb3cecd9c464628854bfa22/html5/thumbnails/1.jpg)
THE RECO1
ETMEEEF3= s1E- II
APPARATUS
Applicable forclinical estimation of
human bloodprotein constituents
... for separations of organic orinorganic compounds havingelectro-migratory characteristicswhen electric potentialis applied.
PRICE: RECO Model E-800-2 Paper Electro-phoresis Apparatus, consisting of Power Unitand Migration Chamber, complete, $290.00
(Price does not include Automatic Timer)
SPECIAL FEATURES+ Water Cooled Surface for Paper or Starch.. .The plat-
form surface, on which buffer saturated filter paper orstarch is placed, is cooled by circulating water (see illus-tration) to reduce evaporation and minimize change inbuffer solution during operation, thus permitting use ofhigh voltages.
Foreign inquiries solicited. Delivered prices quoted on request.
IMANUFACTURED BYI RCH EQUIPMENT'U$ERCH EQUIPMENT
Power Unit supplies 0-720 volts at 200 miliamps con-tinuously variable, with 3lh-inch volt-meter and 3'A-inchdouble scale miliamp meter reading 0-20 and 0-200 mili-iamps for accurate current measurements. Direct currentmeasurements. Direct current ripple is reduced by meansof a choke-capacitor filter. Multiple power outlets avail-able at nominal extra cost. For 115 volts AC.
4 Anti-diffusion plates in electrode troughs reduce anychanges in electrolyte at the paper due to electrolysis.
± Platform surface is quickly adaptable for either paperor starch paste by means of end gates.
{ Electrode vessels easily dismounted for cleaning.+ Automatic timer for use in conjunction with power sup-
ply (at additional cost).Write for Brochure SS-10
CorporationCABINETS for ContinuousVertical Curtain Electrophor-esis Apparatus will be offeredshortly. If interested, requestBrochure S-12 to be mailedwhen issued.
RECO Paper Chromatographic Equipment alsoavairable: Chrornatocabs (for two-dimensional separ-ations) ... Drying Ovens. . . Electric Desalter (for removalof inorganic salts from organic and amino acids)... Racks,stainless steel and Pyrex (for one-dimensional separa-tions)...Pyrex Chromatography Jars (with specially groundtop edges)... Pyrex Solvent Troughs (or complete assem-blies)... Densitometers... Ultra Violet Lamps... Disc Cham-bers ... Stainless Steel Clips. . . Pyrex Indicator Sprayers... Micro Pipets. Write for General Catalog.
I
STREET * OAKLAND 20, CALIFORNIA * TWinooks 3-0556
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NEW (2ND) EDITION - Conant et al.
Clinical MycologyThis useful manual gives a concise knowledge of thediagnosis and treatment of diseases of fungus origin.Including the latest advances, this New (2nd) Editiondefines each disease; tells where it is found;explains source of infection, symptoms,methods of laboratory examination; differentialdiagnosis; and how to institute treatment.All the most up-to-date developments are included.By NORMAN F. CONANT, Ph.D., Professor of Mycology and Associate Profes-sor of Bacteriology, Duke University School of Medicine; DAVID TILLERSONSMITH, M.D., Professor of Bacteriology and Associate Professor of Medicine,Duke University School of Medicine; RoGER DENIo BAKER, M.D., Chief,Laboratory Service Veterans Administration Hospital, Durham, N. C., andProfessor of Pathology, Duke University School of Medicine; JASPER LAMARCALLAWAY M.D. Professor of Dermatology and Syphilology Duke Univer-sity School of Iiedicine; and DONALD STOVER MARTIN, M.D.. Chief, Bac-teriology Section, Communicable Disease Center, Chamblee, Georgia. 456pages. 5ys" x 734", with 202 illustrations. $6.50. New (2nd) Edition.
NEW (6TH) EDITION - Harrow and Mazur's BiochemistryThis text will prove especially useful to instructor3 of college general biochemistry courses.Completely revised for its New (6th) Edition, it is a sound, authoritative presentation.Among the many new and expanded topics are paper chromatography, counter-current distribution,lipoproteins, criteria for the purity of a protein, quantitative estimation of amino acids,determination of "end groups" in a protein, the Donnan membrane equilibrium,techniques for demonstrating enzyme activity, and a new table of blood values.By BENJAMIN HmAmow, Ph.D., Professor of Chemistry, College of the City of New York; and ABRAHAM MAZUR, Ph.D., AssociateProfessor of Chemistry, College of the City of New York. 563 pages, 6" x 9", with 131 illustrations. New (6th) Edition-just Ready!
NEW - Walker's
Vertebrate DissectionThe aim of this manual is to help the student understandthe major anatomical transformations that have occurredin the vertebrates in the course of their evolution.The author has organized the book by systems.Under each he gives clear, descriptive guides to thedissection for several types representing the threelevels-primitive fish, terrestrial vertebrate, and mammal.The directions for dissection are accompanied bybrief discussions and by helpful illustrationsthe student would make himself in the laboratory.Teachers will find the material readily adaptable.By WARREN F. WALKER, JR., Ph.D., Associate Professor of Zoology, OberlinCollege, Oberlin, Ohio. About 320 pages, 6" x 9", illustrated. Just Ready.
W. B. SAUNDERS COMPANYWest Washington Square Philadelphia 5
A&pril 30, 1954 1A
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FOR
RESEAR-CH-
HORMONES, STEROLS andNE INTERIEDIATES
21-AcetoxyallopregnanedloneAcetoxybisnorcholenle Acid21-Acetoxypregnenolone (Alcohol)21-Acetoxypegenolone AcetateAndoeneoeCortisone (Alcohol)Cortisone AcetateDehydroioandrosterone (Alcohol)Dehydrol1oandrosterone Acetate16-) Iy ropeno1one (Alcohol)16-1Iydroprenenolone AcetateDelta..5.A ds'oets5,- 17-Diol-DiacetateDeha-5-Androsteue-3-Beta-17-Beta-Diol-3-
Acetate-17-BenzoateDelta-5-Androstene-3-Beta-17-Beta-Diol-17-
BenxateI_e.oxy tlcooe (Alcohol)
Desoxycorticosterone AcetateDMeshylstllhesterolErgoserol (Non Irradiated)Estradiol, US.P., AlphaEstradiol Benzoate-US.P.Estrone, U.S.P. (Natural)Estrone, U.S.P. (Synthetic)Ethinyl Estradiol N.N.R.Ethisterone, U.S.P.17-Hydroxy-21-Acetoxypregnenolone AcetateHydroxyhisnorcholenic Acid17-Hydroxypregnenolone17-HvdroxyvroaesteroneMethylandrostenediolMethyltentosterone U.S.P.Premmaneb17-alnhai.21.Di;X1 .2t2zbni^
Acetate
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GENERAL 60 Laboratory ParkBIOCHEMICALS, INC. Chagrin Falls, Ohio
SCIENCE, Vol. 119
| h ii. fin./ alaS /feanj Qualtt
-_TAME-(p-toluene sulfonyl-L-argininemethyl ester hydrochloride)
AVAILABLE-FOR-I MMEDIATE-DELIVERY
ENZYME -SUBSTRATE** Sherry, Sol. THROMBIN as a proteolyticenzyme. Symposium, Atlantic City, April 14,1954. Federation Proc., 13, Pt. II, 568 (1954).
1 gram $10.0010 grams- 25.00
100 grams-120.00SEND FOR OUR NEW CATALOGUE
H. N. CHEMICAL CO.1651-18th St. Santa Monica, California
P-HOTOVOLTLine-Operated ElectronicMULTIPLIER-PHOTOMETER
Mod. 520-M
For the exact esurement of light values as low as1/10,000 microlumen . . . for absorption and flamephotometry, colorimetry through microscopes, scintilla-tion menasurements, fluorescence trace analysis, etc.Write for ulen #360-to
PHOTOVOLT CORP.95 Madibon Ave. New York 16, N. Y.
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![Page 4: THE ETMEEEF3= s1E- II · 2005-07-13 · 1 gram $10.00 10 grams- 25.00 100 grams-120.00 H.SENDN.FORCHEMICALOUR NEWCATALOGUECO. 1651-18th St. Santa Monica, California P-HOTOVOLT Line-Operated](https://reader035.vdocument.in/reader035/viewer/2022070912/5fb3cecd9c464628854bfa22/html5/thumbnails/4.jpg)
I* Diiodolecithin* 3,5-Diiodothyronine
Hydrochloride* 1,2-Dimercaptopropanea 2,3-Dimercapto-
propionic Acid* 3,4-Dimethylbonzoic
Acid* Dimethylcarbamyl
Chloride* 2,2-Dimethylethylenei-mine
* 1,1 -DimethylethyleneOxide
* 1,2-Dimethyl-naphthalene
* 1,5-Dimethyl-naphthalene
* 5,6-Dimethyl-1,10-phenanthroline
* Dimethylpyrone* 2,4-Dimethylpyrrole
D_
L2,5-uimernylpyrrole* 2,4-Dimethylquinoline* Dimethyltelluronium
Diiodide* 2,6-Dimethylthianthrene* 2,4-Dimethylthiazole* Dimethyl Zinc* a,a'-Dinaphthyl* ,B.'-Dinaphthyl* 2,2-Dinitrodiphenyl* 4,4'-Dinitro-l,l'-
binophthyl* 1,5 Dinitronaphthalene* 1,8-Dinitronaphtholene* 1,6-Dinitro 2-naphthol* 2,6-Dinitrophenol* f-Diolein* 4,4'-Diphenylbiphenyl* Diphenylcarbamyl
Chlloride* Diphenyidichlorosilane
Ask for our new-complete catalogue
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PHARMACOGNOSYLABOIRATORY MANUAL
by MAYNARD W. QUIMBY, RAYMOND W. VANDER WYK,WILLIAM E. HASSAN, JR.
Massachusetts College of Pharmacy
Designed specifically to acquaint studentswith the biological drugs and drug products,this new manual clearly outlines the moderndevelopments for their extraction and stand-ardization. Through studies of both usefuland harrmful constituents, students gain awell-grounded knowledge of this field inwhich scientists can now isolate potenttherapeutic drugs and administer them withminimal side effects. The official tests foridentity and purity discussed can be per-formed with ordinary laboratory equipment.Copyright 1953; $3.00
Order now ... on approval if you wish ... from
BURGESS PUBLISHINIGCOMlPANnYe428 South Sixth Street Minneapoli
ApIl 30945
KLETTELECTROPHQRESIS
(
CUSTOM MADE
TOOL FOR THE ANALYSISOF COMPLEX COLLOID SYSTEMS, AND FORTHE CONTROL OF PRODUCTION OFPURIFIED PROTEINS, ENZYMES, HORMONES
KLETT MANUFACTURING CO.179 EAST 87TH STREETNEW YORK, N. Y.
ftho...-
5AApril 30, 1954
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providles rapidl. accullralte weighing9
111 9. (VCORROSION-RIAll exposed metanacious, chip-procand beam suppo
FUNCTIONALLScales are steppelevel visibility andulate. The largetheir beams arewill be positive
5 _ Highly resistant tof41fI corrosive action of
laboratory fumes.
3 graduated scalelevels for easy read-ing. Riders moveeasily.
Hard, Cobalite KnifeEdges maintain trueedge indefinitely.
Grooved Agate Bear-ings are protectedagainst damage, yetreadily accessible forcleaning.
No. 4030
C A P A C I T Y S E N S I T I V I T YV/ith extra weight 201 9.) 0.01 9. or lessESISTANT! ONE-PIECE BEAM CONSTRUCTION!I parts are stainless steel. A tough, te- No BEAM CONS TRUC TON!of, metallic lacquer is used on the base No screws, rivets, or separate scales to became loose.rt. Hard-to-clean crevices and cracks are eliminated.Y DESIGNED! RAPID ZERO SETTING!ed upward front to rear for best eye- The usually tedious adjustment to zero is accomplished1 to make weights convenient to manip- almost instantly by means of a leveling screw. No moreweights have sharp hanger edges and aless instance of a levelings c ofdeep-notched to insure that settings careless acceptance of a poor zero setting because ofand accurate. the nuisance of correcting it.
Each $27.50 Extra Weight $1.50 Additional
6AS; IEN CE, \ ol. I 1 9