Solid State Radiations, Inc

STABILITY, DAY AFTER DAY AFTER DAY AFTER DAY

REVOLUTIONARY B R E A K T H R O U G H I N PHOTOMETRY F O R 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-

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.

ultra-stable 1100 SERIES P H O T O N 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 or write 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. 91 on Readers' Service Card

82 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 A v e n u e , Los Angeles, Calif. 90064 (213) 478-0557