STABILITY, DAY
AFTER DAY
AFTER DAY
AFTER
DAY
REVOLUTIONARY B R E A K T H R O U G H IN PHOTOMETRY FOR SPECTROSCOPY Pioneered by SSR and based on re-
t h e r m i o n i c d y n o d e emission. Cain
put for data processing and accurate
search r e c o m m e n d a t i o n s f r o m the
shifts originating from high voltage ef-
wide range log or linear analog out-
California Institute of Technology, the
fects are cancelled out by using the
puts for graphic recording, with back-
ultra-stable 1100 SERIES P H O T O N
p h o t o m u l t i p l i e r t u b e as a d i g i t a l
panel HV control.
COUNTING PHOTOMETER has been
counter instead of a D.C. amplifier.
developed. This system uses a funda-
The additional benefits of PHOTON
tions in Raman, U.V. Fluorescence,
mentally new approach, which elimi-
COUNTING include direct digital out-
Mass Spectroscopy, Astronomy, etc.,
Scientists with stability or S/N limita-
nates the c a l i b r a t i o n and baseline
. . . PHOTON COUNTING is ready for
drifts that limit existing photometers
you. If you're ready for photon count-
(which integrate the photomultiplier
ing photometry, call o r w r i t e today for
anode current directly).
SSR's new brochure on their revo-
TheSSR1100 SERIES PHOTOMETER uses the principle of counting each individual photoelectron, rejecting D.C. leakage and dark current as well as
SSR
Circle No. 70 on Readers' Service Card
58 A .
ANALYTICAL CHEMISTRY
l u t i o n a r y 1100 SERIES P H O T O N COUNTER. Solid State Radiations, Inc. 2261 South Carmelina Avenue, Los Angeles, Calif. 90064 (213) 478-0557
