SOA
ANALYTICAL
See
CHEMISTRY
THEM DEMONSTRATED at the EXPOSITION
BROOKFIELD VISCOMETER
SARTORIUS " S E L E C T A S "
Available in a variety of models suitable for extremely accurate work with both Newtonian and non-Newtonian materials. Portable. Plugs into any A.C. outlet.
Unequalled for speed, accuracy, convenience and reliability. See its many fine features demonstrated at the exhibition. Cuts weighing time by 2/3!
GENERAL LABORATORY SUPPLY COMPANY t M M > t t , a M , W M i a l m
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ARDCO POLAROGRAPH Cut down time and save operating costs! Use it for measuring any ion capable of being reduced. Knob controls permit the selection of working voltages up to 3 volts and current multiplications to 24 micro amperes. Portable, easy to operate.
Booth 640—Convention
Hall, Philadelphia, Pa.
24th
Chemical
Exposition
of
Industries
'
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"Hollow Spindle" Stirrer
Sparkless, induction 1/79 H.P. m o t o r with hollow a r m a t u r e secures stirrer shaft on lower end with screw chuck and on upper end with spring centering device. Glass, m e t a l or plastic stirrers with shaft 7/32" to 5/16" can be used. Support a r m is 9" by Y2". No. 77-677 "Hollow Spindle" Stirrer operates from 115 volt, 50-60 cy. A.C. without propeller, $22.50. Stainless Steel Stirrers No. 77-837 have 14" shaft and propeller. 12" length, $2.25; 18", $2.50; 24", $2.75. SCIEMiFIC
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Eberbach nnn RUBOR, miCH.
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CORPORATION ο»««β ι»·
1. Operator can vary work ing length of stirrer shaft by moving stirrer up or d o w n in hollow armature of motor. 2. N o need t o change stirrers for different size containers.
2"
3. T o place and remove containers, raise the stirrer only; leave the motor stationary.
