ANALYTICAL CHEMISTRY
PRODUCT CAPSULES
For your convenience —short "refreshers" on last month's ads. O b t a i n free information on a n y of the products or services described b y circling the corresponding key numbers in the "Product Capsules" portion of the reply card preceding this section.
Analyzers. Data file on oxygen ana lyzer measuring gas samples. 6
Chromatographs.
2
Conductivity Meters. Direct reading on all of 12 ranges. Details. 145
Analyzers. Info on "AutoAnalyzer." Continuous automatic analyses. 115
Chromatographs. Bulletins on proc ess ''Fractomatic" and lab "Fractovap."
Counting Systems. Proportional sys tem measures radioactivity. 100
Atomic Instruments. Catalog on in struments, systems, accessories. 45 Balances. Single pan with operating zone at table level.
unified 4
Balances. Data on "Ultramatic" pre cision micro-balance. 5 Balances. New balance dries weighs simultaneously. Data.
and 24
Balances. Triple beam. Sensitivity: .01 gram. Capacity: 311 gram. 101 Balances. Determines moisture per cent of 10 gram samples. 1 13
Data file on new
"Megachrom" preparative gas unit.
80
Colorimeters. Catalog on "Spectronic 2 0 " Band pass: 20 m^. 50 Condensers. Data on crude fiber con denser with full heat control. 82 Conductivity Equipment.
bridges, controllers, cells.
Catalog on
139
Crucibles. Bulletin on porous bottom porcelain crucibles. 30 Crystals. 36-page booklet, "Synthetic Optical Crystals," offered. 71 Crystals. Bulletin on cell windows, prisms, accessories. 75 ( Continued on page 152 A)
BETHLEHEM BENCH BURNER SURFACE-MIXED AIR-COOLED
GAS-OXYGEN
Two concentric fires—operate inde pendently or as one. Central fire can be varied from sharp needle point to long powerful jet, able to handle hard glass up to 35 mm. Using both fires, quartz up to 25 mm or hard glass up to 100 mm can be handled with low pressure citygas. Larger sized quartz requires hydrogen with oxygen.
Balances. Single pan. Compact base, compensated beam, large chamber. 144 Barium Chloranilate. Determines sul fate in less than 1 / 2 hr. Data. 67 Blenders. Info on new twin-shell blender with 3 mixing actions. 16
The unprecedented temperature ranges are due to a special adaptation of the surface-mixing principle—especially impressive to those accus tomed only to premix burners. These fires are completely silent, without chance of flashback.
Books. "Proceedings of the 2nd U. N . Int'l Conference on Peaceful Uses of Atomic Energy." Brochure. 26
OTHER UNUSUAL FEATURES
Buret Fillers. Push-button instrument fills buret to zero mark. 123
All controls are needle valves. Valves and body always cool. A single pair of hoses—no tangled lines. Friction gear in place of ball and socket—easier and faster adjustment of elevation. Operates without change on natural gas, mixed, propane, butane, hydrogen. Cat. N o . A 33383 . . . SI25.00 SPECIFICATIONS
Calcium Carbonate. Data on pri mary standard line includes CaC0 3 . 88 Cans. Cans for chemicals in wide range of styles, shapes, sizes. 29
Height 9" Base diam. 6" Net wt.4'/, lbs. Shipping wt.5/ 2 lbs. Recommended fuel pressures Gas—less than 1 lb. psi Oxygen—2 to 3 lbs. psi will operate on higher pressures
Cells. Data on complete line of glass absorption cells. 77 Centrifuges. Bulletin on unit featur ing continuous flow operation. 25 Centrifuges. Angle head analytical unit. 3400 rpm. 10" dia. 39
STANDARD
SCIENTIFIC
REAGENTS AND CHZEMICALS
8 0 8 BROADWAY NEW YORK 3. Ν Υ
Supply Corp.
LABORATORY APPARATUS i
Centrifuges. Bulletin on refrigerated unit. 28 interchangeable heads. 140 Circle No. 145 on Readers' Service Card VOL.
3 2 , N O . 2 , FEBRUARY
1960
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151
A
