READERS' INFORMATION SERVICE Radioactivity Analytical Apparatus . .
34 A
Titrators
59 A
Recorders, Chromatography
49 A
Ultrasonic Cleaner
27 A
Ring Ovens
10 A
Viscometers
35 A-3
Rotators
87 A-l
Warburg Apparatus
72 A
Safety Enclosures
80 A-3
Safety Shield
12 A
Scattermasters
83 A-2
CHEMICALS AND MATERIALS
Shakers
87 A-2
Absorbents
Spectrographs
33 A
Electrodes, Graphite
Spectrometers
25 A
Spectrophotometers .
Ion Exchange Resins
88 A-l
Polyethylene Cubes
87 A-3 35 A-2, 89 A-l
Sucrose Acetate Isobutyrate
45 A, 67 A-3
Stopcocks
7A 79 A
Radiochemicals
. 17 A, 38 A, 46 A-l, 60 A, 69 A, 91 A-2
Stirrers
58 A
Ether Anhydrous
28 A, 32 A, 46 A-3
Spectrophotofluorometers
A new corrosion-resistant unit for ascending technique with 8 X 8-inch paper...
65 A
22 A, 50 A
Syringes
80 A-2
Table Tops
76 A
Thermistors and Varistors
84 A
MISCELLANEOUS Cleaners, Glassware
36 A
ZîûMOi—WitcheH
CHROMATOGRAPHY TANK
PLACE STAMP HERE
READERS' I N F O R M A T I O N
SERVICE
Analytical Chemistry 430 Park Avenue New York 22, Ν. Υ.
ANALYTICAL CHEMISTRY Readers' Information Service July 1 9 5 8 — V a l i d through January 1 9 5 9
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3 6 7 8 - L . Paper Sheetf, Whatman 8 X 8 inches. Per 1 0 0
Name PositionCompanyAddress—
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29.50 26.69
No. 1 , site 1.70
ARTHUR H. THOMAS CO.
Manufacturers' Literature—L 1 14
3 6 7 7 . Chromatography Tank, 5tainleis Steel? Thomal-MhcheH, as above described, with two supports for rods, glass cover, two each Stainless steel troughs and rods, four Spring Clips, 100 paper sheets, 8 X 8 inches 31.20 Each, In lots of « 28.25 3 6 7 7 - B . Ditto, but with glass rods and troughs Each, in lots of 6
New Chemicals—C 1 2
A simple, compact unit, designed for the development of two paper chromatograms 8 inches square, by one-dimensional or two-dimensional ascending techniques, using micro quantities (1 microliter portions) of test solution. See "Ascending Paper Chromatography" Journ. Assoc, of Official Agri. Chem., Vol. 1,0, No. I,, pp. 999-1029, by Lloyd C. Mitchell, U. S. Division of Food, Food and Drug Administration. Tank is approximately 9 inches long X 3}4 inches wide X 9 inches deep, of Stainless steel; easy to clean; its small size relative to the paper area speeds achievement of vapor equilibrium. ir In use, paper sheets are attached by means of Stainless steel spring clips to rods of either Stainless steel or glass, which rest on removable, W-shape supports at top of tank. Lower edge of paper sheets is suspended in removable troughs of either Stainless steel or glass which, in use, are filled with the mobile solvent. A flat glass cover, with ground edges, permits observation of the ascending solvent front.
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Laboratory Apparatus and Reagents VINE ST. A T THIRD
PHILADELPHIA 5, PA. More and more laboratories REIT ON THOMAS Circle No. 38 A on Readers' Service Card, page 77 A
