DECEMBER 1958
ANALYTICAL CHEMISTRY ! ADVERTISED PRODUCTS INDEX EQUIPMENT AND INSTRUMENTS Amplieorter
20 A-l
Analyzers . . .
81 A-3, 104 A-2, 106 A, 108 A
Apparatus
26 A, 61 A
Appliances
47 A
Badges, Radiation Balances
82 A-2
. . . 12 A, 16 A, 40 A, SO A-2, 93 A
Baths
71 A
Blenders
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 · · Numbers on t h · 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 t h · company concerned.
102 A-l
Burets
58 A
Carts
I l l A-l
Cells Centrifuges
Readers' Information Service
42 A, 83 A-2
See p a g e 7 3 A for N e w Products, 9 2 A for N e w Chemicals a n d 9 5 A for Manufacturers' L i t e r a t u r e
. 34 A, 51 A, 57 A, 74 A-2,109 A-2
Chromatogranhs
3 A, 41 A, 75 A
Clamps, Apparatus
103 A
Collectors, Fraction
107 A-l
Colorimeters . . 38 A-7, 38 A-8,38 A-9, 80 A-l,
ANALYTICAL CHEMISTRY Readers' I n f o r m a t i o n Service
90 A-l Comparators
109 A-l
Counters, Drop Counters, Liquid Phosphor
6 A-l . . . .
20 A-5
Counters, Proportional
54 A-l
Crucibles
100 A-3
Densitometers, Electronic
38 A-5
Diffraction Gratings
49 A-l
Digestor, Micro Kjeldahl
45 A-2
Electrodes
94 A, 111 A-2
Electrometers
68 A
Evaporators, Flash
77 A-2
Filaments Fluorescence Measurement
74 A-l . . . .
5 18
6 19
7 20
8 21
5
6
7
8
Literature—L 3 4 5 16 17 18 29 30 31 42 43 44
6 19 32 45
7 20 33 46
8 21 34 47
N e w Chemicals—C 1 2 3 Manufacturers' 1 2 14 15 27 28 40 41
4 17 4
9 22
10 23
11 24
12 25
13 26
9 22 35
10 23 36
11 24 37
12 25 38
13 26 39
Name
78 A
Fluorimeters
90 A-2
Fume Hoods
50 A-l
Funnels
62 A, 69 A
Furnaces
59 A, 70 A
Generators
77 A-l
Hot Plates
54 A-2, 80 A-2
Instruments
December 1958—Valid through May 1959
N e w Products—Ρ 1 2 3 14 15 16
Position Company Address
56 A, 88 A-l
Lathes
45 A-l
Meters
38 A-4, 38 A-6
RACE
Mixers
110 A-l
STAAP
Monochromators
49 A-2
HBE
Mortars & Pestles
18 A
Oxygen Bomb Sulfur Apparatus
. .
100 A-2
pH Meters 38 A-l, 38 A-2, 38 A-3, 84 A, 114 A Photofluorometers
29 A
Photography Equipment, Time Lapse
83 A-l
Photometers
100 A-l
Pipets
98 A
Polarographs
89 A
READERS' INFORMATION SERVICE Analytical Chemistry 430 Park Avenue New York 22, Ν. Υ.
READERS' INFORMATION SERVICE Power Source 20 A-3 Presses 30 A, 52 A Printing Integrator 99 A Pumps 27 A, 85 A-2 Radioactive Analysis Instruments . . 8 A, 44 A, 104 A-l Refrigerated Freeze-Mobile Unit . . 91 A Safety Enclosures 85 A-l Scaler 20 A-2 Spectrofluorometers 49 A-3 Spectrographic Equipment OBC Spectrographs 7 A, 87 A Spectrometers 20 A-4, 35 A, 53 A Spectrophotometers . . 10 A, 28 A, 43 A, 55 A Spectroscopes 60 A Stirrers 54 A-2, 65 A, 85 A-2, 104 A-3, 107 A-4 Stopclocks 105 A Supplies 24 A Tensiometers 86 A Thermometers 73 A Titrators 114 A Viscometers 46 A, 81 A-l, 81 A-2 Ware, Fused Quartz 76 A
Ware, Glass
7 6 A, 110 A - 2 , IBC
CHEMICALS AND MATERIALS Acid Hydrofluoric 31 A Ammonium Thiocyanate 32 A-4 Chloride Dihydrate 32 A-l Crotonic Acid 14 A-3 Crystals 6 A-2 2,5-Dihydroxybenzoquinone . . . . 14 A-5 2-Ethylisohezanoic Acid 14 A-l 2-Ethylisohexyl Acetate 14 A-4 Ferris Ammonium Sulfate 32 A-3 Filter Papers 37 A, 66 A, 88 A-2 Fluorine Gas IFC Ion Exchange Resins 96 A Isotopes, Stable 107 A-2 Materials, Chromatographic . . . . 48 A Methacrylonitrile 14 A-2 Nitric Acid 22 A Potassium Dichromate 32 A-2 Reagent Chemicals 102 A-2 Reagents 82 A-l Tape, Plastic 107 A-3 2,2,4-Trimethyl-l,3-pentanediol... 14 A-6
Thomas-Seligson AUTOMATIC PIPETTE* Eliminates individual sampling pipettes a n d repeated filling of dilution pipettes Ensures reproducible sampling, delivery a n d dilution
TO
SUCTION
, - v — > • • • — .
PINCH CLAMP
READERS' INFORMATION SERVICE Analytical Chemistry 430 Park Avenue New York 22, Ν. Υ.
ANALYTICAL CHEMISTRY Readers' Information Service December 1 9 5 8 — V a l i d through M a y 1 9 5 9
N e w Products—Ρ 1 2 3 14 15 16
4 17
5 18
6 19
7 20
3 21
N e w Chemicals—C 1 2 3
4
5
6
7
8
M a n u f a c t u r e r s ' Literature—L 1 2 3 4 5 14 15 16 17 18 27 28 29 30 31 40 41 42 43 44
9 22
10 23
Π 24
12 13 25 26
SAMPLE 0RAWN
A fixed volume pipette permanently at tached to a double bore stopcock, which permits rapid filling without adjustment to a reference mark, and complete wash out delivery of the contained sample by a measured amount of a second liquid from a burette, pipette, or arbitrarily cali brated tube connected to upper arm. Eliminates need for individual sampling pipettes, and repeated filling of dilution pipettes, realizing a highly significant economy of time and glassware, and as suring reproducible sampling, delivery, and dilution which are especially impor tant in routine clinical chemistry. Appli cable, however, to any type analysis in which a standard volume is diluted or reacted directly with a measured volume of a second liquid. The pipettes are designed for attach ment to standard burettes or to similar dispensing vessels. Connection is best made with Tygon tubing, which makes a transparent, flexible joint. 8 2 0 9 - B . Pipettes, Automatic, ThomaiSeligson, as above described. To contain, ml 0.05 0.1 0.2 0.5 1.0 Tolerance, m l ( ± ) . . 0.005 0.005 0.01 0.01 0.05 65 160 140 Length, mm 65 55 Each 11.00 11.00 11.00 11.00 11.00 *Patent applied for Copy of Bulletin 131 sent upon request.
6 19 32 45
7 20 33 46
8 21 34 47
9 22 35
10 23 36
11 12 13 24 25 26 37 38 39
Name
.
Position
ARTHUR H. THOMAS CO. Laboratory Apparatus and Reagents VINE ST. A T THIRD
PHILADELPHIA 5, PA.
Company Address
Ν
. .
.
More aid more loeorotori» M l Y OH THOMAS Circle No. 98 A on Readers' Service Card, page 97 A
