HOEPPLER VISCOSIMETER PRECISION MODEL
VISCOSITY DIRECTLY IN CENTIPOISES
TEMCO
HOT PLATE outstanding handsome
FALLING BALL
performance appearance
(from 0 ° C to 100° C) EQUALS
7 " D I A . A L U M I N U M TOP
Β κ (Sb-Sf) χ Time Β = Ball Constant Sb = Sp. gr. of ball Sf = Sp. gr. of fluid
STAINLESS
FAST, E V E N
The Hoeppler Viscosimeter pro vides a fast and accurate method of determining the viscosity of gases, liquids, oils, plastics, syrups, vis cous tars and dark colored liquids. Direct reading in centipoises (or centistokes). From 0.01 to 1,000,000 centipoises. Accuracy 0 . 1 % to 0.5%. Small sample (30cc) re quired. Results consistent and reproducible. Order direct or from leading laboratory supply dealers. Write today for Bulletin
BODY
HEATING
One of a wide line of highly-depend able hot plates, this NEW TEMCO Model 2500 is the finest money can E L E M E N T CIRCLES TOP buy in its comparable size range. Top TE 4 TIMES—HEATS quality throughout, it combines the P L AFAST AND EVENLY best in performance plus excellent ap pearance. Extra sensitive thermostat provides stepless control with less than 3° variation at any point from room temperature to 370° C. (700° F.). Machined smooth cast aluminum surface plate reaches top temperature in 25 minutes, has negligible temperature gradient. Interior of case and your table top protected from heat by scien tifically designed ventilating channels. Long, spiraled heating ele ment embedded in refractory plate, replaceable without new surface plate. Dovetail sockets at rear for holding apparatus. $27.50. Write for data and name of nearest dealer.
HV-303.
Manufactured by F I S H - S C H U R M A N CORP. 72 Portman Road, New Rochelle, Ν . Υ.
Fish-Schiirman Circle number 59 A-1 on Readers' Service Card, page 45 A
No. 6
STEEL
E X A C T I N G CONTROL FROM ROOM TEMP E R A T U R E TO 370 C.
of the
ADVANCES IN CHEMISTRY SERIES
AZEOTROPIC DATA ||247-pase table of binary systems 41 -page formula index
THERMO ELECTRIC MANUFACTURING CO. 478 HUFF STREET, DUBUQUE, Circle number 59 A-2 on Readers' Service Card, page 45 A
IOWA
WHAT CAN YOU DO WITH VIBRATIONAL ENERGY? If you are seeking new and better ways t o : Remove dissolved gases from liquids Prepare stable emulsions Flocculate warerborne particles Break down agglomerated mixtures Accelerate chemical reactions Achieve dispersive or coagulative effects
. . . investigate Raytheon Sonic Oscillators, These prac tical, efficient laboratory tools provide a n effective m e a n s of exploring t h e field of sonic vibrational energy as a p plied t o industrial research. Write for detailed
bulletins and literature on recent Address Dept. 6120 AC.
applications.
RAYTHEON MANUFACTURING COMPANY 17-page table of ternary systems 1 0 7 charts
EQUIPMENT SALES D I V I S I O N , Waltham 54, Massachusetts DISTRICT OFFICES: Boston, New York, Cleveland, Chicago, New Orieani, Los Angeles (Wilmington), San Francisco, Seattle. I N T E R N A T I O N A L OPERATIONS, 589 Fifth Ave. NEW YORK CITY
RAYTHEON ^iHÏmAMI JnWtwW
329 pages
cloth bound
$4.00
A m e r i c a n Chemical Society 1155 Sixteenth St., N.W. Washington 6, D. C.
SONIC OSCILLATORS Circle number 59 A-3 on Readers' Service Card, page 45 A
VOLUME
2 6 , N O . 9, S E P T E M B E R
1954
59 A
