Peroxide Bomb Apparatus
NUCLEAR SCIENTISTS Immediate openings exist for outstanding PhD's, or equivalent, to serve as Senior Scientists for:
For rapid combustion and fusion reactions with sodium peroxide Only a few minutes are required to convert Sulfur, Halogens, Phosphorus and other elements to watersoluble salts in sealed PARR bombs. The PARR 2001 apparatus shown above includes a 22 ml. electric ignition bomb with all accessories for combustion tests. Similiar outfits are available with a 42 ml. electric bomb, also with 2.5, 8 and 22 ml. flame ignition bombs.
Nuclear Test Programs
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Applications o f Isotopes^for Environmental Industrial Uses.
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Neutron Activation Projects
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Radiochemical Research and Analysis
P A R R INSTRUMENT C O M P A N Y
and
These a r e challenging growth positions for qualified scientists who have demonstrated maturity, achieve ment and a keen interest in the nuclear field. Send resume in strict confidence Director of Personnel
to
ISOTOPES, INC. 123 W o o d l a n d Avenue
Ask for Specification 2000 211 Fifty-Third St.
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W e s i w o o d , New Jersey
An Equal Opportunity Employer
Moline, Illinois
Circle No. 140 on Readers' Service Card
Complete with attachments
HELLER ELECTRONIC CONTROLLED
DIRECT READING .
'Ά
Ο
Carbon Analyzer
LAB MIXER CONSTANT TORQUE STEPLESS VARIABLE DC SPEEDS FROM AC LINE?) • Thyratron tubes on the Heller GT-21 controller supply demanded current by converting power m stepless variation to the direct current motor. Assures constant torque as mixes become either
viscous or fluid. "Variable, reversi ble motor has direct and gear drive. Armature shaft speed, 0-5000 rpm. Gear shaft 18:1 ratio. Chuck, shafts, 3-step pulley included.
Order from your Laboratory Supply Dealer or write-*
GERALD K. HELLER CO. 2671 South Western Street · U s Vegas, Nevada · Circle No. 131 on Readers' Service Card 130 A
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ANALYTICAL CHEMISTRY
P. 0 . Box 4426
Now no more graphs to prepare — no c a l c u l a t i o n s ! T h i s LECO equipment gives accurate results in all carbon ranges in 50 to 80 seconds. You read actual per centage of carbon right on the digital meter. Simple, one-button, automatic operation. Weight c o m pensator for varying sample weights. Write for detailed
literature
LABORATORY EQUIPMENT CORP. 1061 Hilltop Road
St. J o s e p h , M i c h .
Circle No. 135 on Readers' Service Card
