*U.OW C A T H O » .
Westinghouse hollow cathode tubes don't cover all the elements...
Li Να Mg Κ
AI
Ca
Ti
Rb Sr
Zr
Cs Ba La
Si
Cr Mn Fe Co Ni Cu Zn Ga Ge Nb M o Ta W
Ce
Th
Rh Pd Ag Cd Re
Pr Nd
Pt Au Hg
As Se
Sn Sb Te Pb
Sm Eu Gd Tb Dy Ho Er
Bi Tm Yb Lu
U
they do cover the tough ones Westinghouse now makes over 170 hollow cathode tubes for atomic absorption spectroscopy, includ ing several multi-element types. All are character ized by high stability of light output and long life. All have JEDEC-type plug-in bases, making them completely interchangeable. T h e r u g g e d , l o n g - l a s t i n g d e s i g n is a c h i e v e d through integral all-glass construction of output windows and sidewalk Double mica shields prevent movement within the tube. They also stop side glow, which minimizes gas clean-up and permits higher
forward light output. And only Westinghouse pro vides a protective package clearly labeled for quick shelf identification. F o r a large copy of the chart shown above, write to Westinghouse Electronic Tube Division, Elmira, N.Y., or Westinghouse International Corporation, 200 P a r k Avenue, New York, Ν. Υ. ET4IO6
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You can be sure if its Westinghouse
Circle No. 109 on Readers' Service Card
VOL. 36, NO. 11, OCTOBER 1964
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