FEBRUARY 1958
ANALYTICAL CHEMISTRY | ADVERTISED PRODUCTS INDEX
EQUIPMENT AND INSTRUMENTS Absorption Cells 80 A-2 Air Monitors 62 A-l Analyzers 30 A-l, 39 A Analyzers, Moisture 48 A-l Armoured Heaters 91 A Balances 6 A, 12 A, 21 A-6, 22 A, 32 A-2, 34 A Blenders 24 A Calorimeters 102 A-2 Cathodes 102 A-l Centrifuges 69 A-l Chromatographs 10 A-l, 10 A-2, 30 A-2, 94 A Colorimeters 49 A-l, 95 A-2 Comparators 76 A Conductivity Bridges and Cells . . . 30 A-3 Counting Systems, P r o p o r t i o n a l . . . 62 A-2 Crystals 26 A Densitometers 70 A-2 Electrometers 61 A Electronic Relays 21 A-8 Evaporators 99 A-l Flask Heaters 21 A-2 Fluorescence Meters 70 A-3 Fluorimeters 95 A-3 Fraction Collectors 77 A, 109 A Fume Exhausts 44 A Fume Hoods 38 A-l Funnels, Separatory 37 A Furnaces.' 67 A, 88 A-l Furniture 38 A-2, 90 A-l Glass Apparatus 110 A Glassware 29 A, 35 A, 55 A, IBC Heating Tapes 21 A-4 Hot Plates 49 A-2 Instruments 28 A Instruments, Nucleonic 52 A Kjeldahl Apparatus 93 A Laboratory Apparatus 74 A, 89 A Laboratory Equipment . . . 25 A-2, 95 A-l Laboratory Ware, Platinum . . . . 47 A Labware, Fused Silicate 65 A Labwasher 69 A-2 Liquid Absorption Cells 68 A-3 Magnetic Stirrers 21 A-S Magnetic Stirring Bars 21 A-3 Meters, Portable Survey 62 A-4 Micro Combustion Apparatus . . . 78 A Mixers 92 A-l Nephelometers 86 A Ovens 31 A-2, 88 A-3 Pellet Presses 20 A, 108 A-l pH Meters 16 A, 59 A, 70 A-l Photochemical Equipment 15 A-l Phototubes 63 A Polarimeters 99 A-3 Polarographs 105 A-l Porcelain Ware 80 A-l Power Outlets 21 A-9 Pumps 90 A-2, 95 A-4 Quartz Lamp 15 A-2 Ratemeters 62 A-3 Reaction Equipment 15 A-3 Reaction Flasks 40 A Recorders, Potentiometric 79 A Recording and Controlling Instru ments 87 A Recording Units 18 A
R e a d e r s ' IInformation n f o r m a t i o n Service Service Readers' These handy cards will bring information of value to chemists, engineers, and other technologists in laboratory, pilot plant, and production Circle d e s i r e d i t e m s : Numbers on the adjoining tear-out card are keyed to items in the NEW PRODUCTS, NEW CHEMICALS, and MANU FACTURERS' LITERATURE sections on the immediately following pages. For further information on any new product or service, or for a copy of literature listed in MANUFACTURERS' LITERATURE, circle the cor responding number and mail card. For information about any of the products listed in the ADVERTISED PRODUCTS INDEX, or in the PRODUCTS CAPSULES section, the reader should write directly to the company concerned. See page 8 3 A for New Products, 91 A for New Chemicals and 9 2 A for Manufacturers' Literature
ANALYTICAL CHEMISTRY Readers' I n f o r m a t i o n Service February 1 9 5 8 — V a l i d through July 1 9 5 8
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New Chemicals 17
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M a n u f a c t u r e r s ' Literature 23 36 49
24 37 50
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29 42
Ν a me PositionCompanyAddress
PLACE STAMP HERE
READERS' I N F O R M A T I O N
SERVICE
Analytical Chemistry 4 3 0 Park Avenue N e w York 2 2 , Ν. Υ.
READERS' INFORMATION SERVICE Viscometers Voltage Stabilizer· Water Bath·
Reiractometers OBC-1 Refractometers, Butyro OBC-3 Reiractometers, Dipping OBC-5 Reiractometers, Hani OBC-7 Refractometera, Induatrial OBC-4 Reiractometers, Juice OBC-6 Rafractometers, Oil Grading . . . . OBC-8 Refractometera, Precision OBC-2 Shakers 99 A-2 Spectrofluorometers 96 A-2 Spectrographs 92 A-2, 107 A Spectrometers . . . . 8 A, 41 A, 57 A, 111 A Spectrophotometers . . . . 51 A, 81 A, 114 A Spectrophotometers, Double Beam . 68 A-l Spectrophotometers, Infrared . . 3 A, 68 A-2 Spray Bottles 98 A Stainleaa Steel Beakers 21 A-10 Stirrers 90 A-3 Stopcocks 54 A Sulfur Titrators 48 A-2 Syringes 88 A-2 Teflon Pumps 66 A Tenaiometers 32 A-l Thermostats 31 A-l Titrators 73 A Tubing, Plastic 84 A Ultrasonic Cleaner 27 A
Su A 45 A 21 A-l
John SPRAY BOTTLE
CHEMICALS AND MATERIALS Adsorbents Chelate Atom Models Cleaners, Glassware Filter Papers Ion Exchange Resins Polyethylene Radiochemicals Reagents
104 A 21 A-7 108 A-2 19 A, 25 A-l 36 A IFC 96 A-l 85 A, 101 A
for
CHROMATOGRAPHY
MISCELLANEOUS Marking Pencils Spectrogram Catalog
105 A-2 58 A
PIACE
• Uniformly fine «pray
STAMP HERE
• Instantaneous control •
READERS' INFORMATION SERVICE Analytical Chemistry 430 Park Avenue New York 22, Ν. Υ.
ANALYTICAL CHEMISTRY Readers' Information Service February 1 9 5 8 — V a l i d through July 1 9 5 8
N e w Products 1 15
2 16
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N e w Chemicals 17
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Manufacturers' Literature 23 36 49 Name Position
24 37 50
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For wide variety of liquids
An ingenious spray tube provides uni formly fine mist or spray, as required for paper chromatography, from a wide variety of liquids with high or low viscosities, different vapor pres sures, etc. Sprays large areas conveni ently from a distance of approximately three feet when connected with a source of air pressure of three lbs. per square inch, but a pressure of five lbs. per square inch is rec ommended. Instantaneous control of spray is provided by applying thumb to a Ji-inch vent in rear of the spray tube. Spray tube is of Pyrex brand glass, with permanently attached plastic screw cap size No. 24 which fits commercial narrow mouth, screw neck bottles. Overall height 7 ^ inches; takes rubber tubing J^-inch bore. 9186-R2. Spray Bottle, Chromatographic (Atom izer), John (Patent pending), as a b o v e d e scribed, with spray tube, screw cap and 8 oz. glass b o h i e , but without air pump or rubber tubing 8.00
ARTHUR H. THOMAS CO. 29 42
Laboratory Apparatus and Reagents VINE ST. AT THIRD
PHILADELPHIA 5, PA. More and more laboratories RELY O N THOMAS
Address Circle No. 98 A on Readers' Service Card, page 97 A
