Get Economical
Gas-Liquid
with the
CHROMATOGRAPHY Ideal
for School
or
AEROGRAPH
Industry
MANUFACTURERS' LITERATURE
for Research or Control Defying
Identifies Components Separation by Other Technics
ANALYSE: fusel oils, t j r p e n e s , flavor c o n stituents, gas streams, oetrochemicals, and synthetics. SEPARATE: alcohols, esUrs, acids, aldehydes, ketones, sulphur compounds, aromatics or aliphatic hydrocarbons, :is-trans isomers, or compounds w i t h varied saturation. PURIFY: r a d i o l a b e l l e d o - other special v o l a tile compounds.
SPECIFIC ADVANTAGES: • • • • • • • • •
Boiling range 2 0 ° - 4 0 0 ° C . Temperature gradient opera Κ on. Temperature increase rate: S:°C/min. Temperature maintained within 1 °C. Interchangeable stainless it«e! columns. Variety of packings and columns. Bench space, 1.1 sq. ft. Micro sample size. Simplicity of operation.
M a s t e r A e r o g r a p h w i t h Recorder, $ 1 2 5 0 C o m p a n i o n w i t h o u t Recorder, $ 7 5 0 . f.o.b. is Your Problem Separation of FATTY ACID METHYL ESTERS?
Berkeley
Write for Descriptive Folder & Details or Send Volatile Sample for Analysis
WILKENS INSTRUMENT & RESEARCH, INC., Acheson B u i l d i n g , Berkeley 4, California Far further information, circle number 90 A-1 on Readers' Service Card, page 77 A
Lab-accepted standard quality TEMCO Series 1500... α
compact,
electiic genercl
convenient
furnace lab
work
procès:; control. size: A"
χ 3%*
for and
Chamber or
9".
W e l d e d steel construction, embedded element plates.
Complète!/ variable temperature control. . . lets you select and hold any temperature from 3 5 0 ° F. to 1 8 5 0 ° F. regardless of fluctuations in line voltage. Just another feature of this high-quality TEMCO Furnace designed for continuous use a t t€ mperatures υρ to 1 5 0 0 ° F. and intermittent periods up to 1 8 5 0 ° F. Attractive heat-resiiiant mottled g r a y enamel finish. Operates on 1 1 5 or 2 3 0 V a-c. Price complete: $ 1 0 7 . 5 0 and $125.00. W r i t e for data and name of nearest dealer.
Laboratory Equipment. Newest issue of company publication contains de scriptive material on ovens, incubators, centrifuges, and reagents, and includes feature story on "Science and Showman ship." Fisher Scientific Co. (Vol. 25, No. 5) 20 Thermocouple Standard. Temperature-emf values for the iron-constantan thermocouple are established by SAMA standard, which defines scope, purpose and terminology, and includes conver sion tables for iron-constantan. Sci entific Apparatus Makers Assn. (RC 9-11-1956) 21 Water Analysis Reagents. Catalog supplement of 16 pages lists reagents and chemical standards for use in water analysis. Available volumetric solution concentrates are included in the listing. Hartman-Leddon Co. 22 Viscometers. Illustrated catalog dis cusses viscosity measurement and con trol techniques, and describes company line of synchroelectric viscometer models and accessories. Brookfield Engineering Laboratories, Inc. (Cat. 0-57) 23 Labeled Compounds. New 14-page catalog provides listing of carbon, phos phorus, deuterium, and tritium com pounds available, as well as descriptions of various equipment for the isotope laboratory. Volk Radiochemical Co. 24 Precision Measuring Instruments. Condensed catalog features scientific apparatus, test and control equipment, including component parts for various instruments. General Radio Co. 25 Thermoplastic Extrusion. Technical manual contains practical and theoreti cal discussions of the extrusion process comprising 32 pages of illustrated text. Plastics Division, Monsanto Chemical Co. 26 Polyethylene Laboratory Ware. Re vised 1957 catalog provides up-to-date listing of polyethylene items for the laboratory. Includes price list. BelArt Products. 27
PYROMETERS
TEMCO
TEMPERATURE
CONTROLLERS
ELECTRIC FURNACES HOT PLATES FLASK HEATERS
Glassware. Twenty-page catalog lists items and prices of West German labora tory glassware, including Jena, Haldenwanger, Eternabrand and Schellbach. Kern Laboratory Supply Co. 28
THERMO ELECTRIC MANUFACTURING CO. 478
90 A
·
H U F F STREET, D U B U Q U E ,
IOWA
For further information, circle number 90 A-2 on Readers' Service Card, «age 77 A ANALYTICAL CHEMISTRY
Spectrometers. Bulletin contains de scriptions and specifications for two
