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POWER STIR
WITH ELECTRIC GOVERNOR New Eberbach P O W E R - S T I R offers many exciting new features. Foremost is the electric governor which maintains desired speed regardless of line voltage fluctuations or load variations. New Eberbach P O W E R - S T I R is a high-torque, variable speed stirrer designed for intermittent medium duty. I t features an electric governor that maintains desired speed despite line voltage fluctuations or load variations. Gives constant speed regardless of t h e fluid stirred. I m p o r t a n t feature, too, is t h e Eberbach exclusive hollow spindle. This device not only holds and centers metal, glass or plastic stirring rods, b u t also permits the operator to vary the working length of an agitator b y simply sliding it u p or down.
MODEL 77-836D $50.00
We'll send you
Just clip this ad t o your letter head stationery, full details on this exciting new stirrer.
ADVANTAGES • • • •
MAINTAINED SPEED HOLLOW SPINDLE 200 to 1000 R.P.M. EXTRA HIGH TORQUE
SCIENTIFIC INSTRUMENT E-APPARATUS CORPORATION
Eberbach Ann ARBOR, MICH.
OTAHHII1D I H I
For further information, circle number 27 A-1 on Readers' Service Card, page 47 A
Pure Latex
RLP
Laboratory Tubing
THE FASTEST TOEPLER PUMP THE URRY AUTOMATIC TOEPLER PUMP Write for details
Does More Jobs
Large piston volume allows for a high pumping speed. 40 sec. pumping cycle. A volume of 2 liters can be reduced to 0.15% in approximately 10 minutes. (Cycle can be shortened by using higher speed forepump.) Maximum work ing pressure is 35 mm. Hg. Specially modified, the Urry Automatic Toepler Pump will circulate gases at pressures as high as 300 mm. As a circulating pump it will operate at pressures below 150 mm. Its ruggedness and compactness make the Urry Automatic Toepler Pump a very useful laboratory apparatus.
BETTER Because: IT IS 9 5 % PURE LATEX Safe a n d n o n toxic. May be used for food, bacteriolog ical and medical testing purposes. Resistant to most chemicals. May be repeatedly sterilized. IT
WI-5300 1000 cc Price ea. S150.00 500 ec Price es. 145.00 250 ce Price ea. 140.00 Less 5% en lots of 3 or more of one size.
IS S T R O N G A N D T O U G H Tested to 4500 lbs. per square inch. Withstands rough usage.
IT IS M O S T
World Suppliers
ELASTIC
Withstands stretching and usual pressures without losing shape. T h e most elastic type of tubing made.
IT IS M O S T
RESILIENT
Soft, pliant, light weight, easy to connect a n d disconnect. Safe to use on the most delicate lab equip ment. Available in 24 sizes from 1/8" χ 1/32" through 1" χ 1/8". Order from your laboratory supplier.
Scientific
glassblowing,
crystals,
films,
and
furnaces
WAKEFIELD INDUSTRIES, INC.
Rubber Latex Products, Inc.,Cuyahoga Falls,Ohio
Nucleonic Park Skokie (Chicago), Illinois
Circle No. 27 A-2 on Readers' Service Card, page 47 A
Circle No. 27 A-3 on Readers' Service Card, page 47 A
VOLUME
2 7, NO. 4, A P R I L 1 9 5 5
27 A
