42 A
ANALYTICAL
B E T T E R I N EVERY W E I G H !
ATOMIC ENERGY
Galileo Balances Feature Accurate, Easier Weighing in Vbrd the Time
reliable than magnetic damping. Bal ance remains stationary after one or two oscillations. PROJECTED READINGS — Direct reading by vernier to 1/20 mg., eliminating Now used by leading laboratories in 42 rider. Adjustment by external dial; countries, Galileo Analytical Balances small errors in zero point corrected provide both automatic loading and opti without handling balance. cally projected readings — and cost no more than comparable weights-and-rider AUTOMATIC LOADING—Weights applied balances. Three outstanding design fea externally by dial, which lowers cor tures insure foolproof accuracy and responding value automatically. shorten weighing time by two-thirds. A M O D E L FOR EVERY R E Q U I R E M E N T AIR DAMPING — Proved far faster, more MODEL DP3 — A reliable, inexpensive balance for routine analytical work with fractional weights. Capacity 200 grams; sensitivity at all loads ± .05 mg. Direct reading of all values from 0.05 to 10 mg. Automatic loading from 10 to 990 mg. Conventional weights for gr. and deca gr. loads. MODEL Jl — Completely automatic op eration from 10 mg. to 200 mg. Capac ity 200 gr; sensitivity at all loads ±. .05 mg. Separate dials load deca gr. gr., and mg. weights. No weight box. Weight is read directly from dials. Other models include: Micro Balance MDP-4 with sensitivity of ± .001 mg. — Simplified (non-automatic) air damped USAER and Selecta Balance. All Galileo models feature hardened brass beam of high tensile strength, chrome-plated brass pans, agate planes and knife edges. Arrest arms and supporting points of beam move in same arc, eliminating sliding of bearings on knife edges. Service by factory-trained workers at our New York office. For details, write to the address below, Dept. C.
GALILEO OPTICAL
INSTRUMENTS
CHEMISTRY
COMMISSION SUPPLEMENT to the
Journal of the ACS in
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Imported and Serviced by GALILEO CORP. OF AMERICA 30 East 60th St., New York, Ν. Υ.
at $0.75
pet
Available
from
cofuf. the
AMERICAN CHEMICAL SOCIETY 1115 Sixteenth St., N. W. Washington 6, D. C.
LABORATORY
THE
DEAD STOP END POINT INDICATOR KARL FISCHER & REDOX TITRATIONS Circuit recommended by the U. S. P. BATTERY OPERATED $15, LINE $50
JAMES INSTRUMENT COMPANY P . O . Box 757
SUPPLY CENTER
F O R ««ALE
DIHYDR0XYACET0NE Ο,Μ.Ρ-FLUOROBENZOiC ACID THIOSALICYLIC ACID P-TOLUIC ACID
Two ( 2 ) Beck man infrared spectrophotometer» of the galvanometer type, I.R. 1. These instruments were in good operating condition one year ago and have not been touched since. Some extra parts thrown i n . Price $300.00 each, where is, as is. The original cost of this instrument was about $4400.00 Should be ideal for educational institutions. Write for details.
Write for priez
Newark 1 , N . J .
*I«C
