A sampling of w h y gas chromatographers w o r l d - w i d e are switching to Carle Micro Volume Valves VALVES THAT WORK P u r g e a b l e h o u s i n g s are a v a i l a b l e It takes imagineering to design valves w i t h all M i c r o V o l u m e Valves if absothat produce sharp peaks required lute elimination of the slightest confor analysis of complex samples . . . t a m i n a t i o n by a t m o s p h e r i c gases t o e l i m i n a t e g h o s t i n g a n d o t h e r (even to parts per b i l l i o n levels) is sampling induced anomalies . . . and required. offer unexcelled reliability for repetiOPERATION UNDER A WIDE tive, routine analysis. RANGE OF C O N D I T I O N S The w o r l d - w i d e acceptance of Carle Constructed of stainless steel and M i c r o V o l u m e Valves in research c e r a m i c a n d g l a s s - f i l l e d Teflon®, laboratories and their availability as Carle Valves operate at temperatures original equipment on chromatoup to 250°C and at pressures w e l l graphs of leading manufacturers are over 100 psi. the ultimate proof these small bore, zero dead volume valves work. VALVES A N D OPTIONAL FEATURES FOR VIRTUALLY ALL H O W SHARP PEAKS ARE GC SAMPLING A N D SWITCHING ACHIEVED T o t a l absence o f u n s w e p t areas, APPLICATIONS r o t a r y s h e a r - s e a l i n g o f s l i d e r s t o You have a choice of twelve standard body, small internal diameter con- porting arrangements w i t h additional necting tubes and porting (less than custom designs for special applica1/32" throughout the entire system) t i o n s . T h r o u g h a c o m b i n a t i o n of e l i m i n a t e p o s s i b i l i t i e s f o r v a l v e - optional p l u m b i n g configurations or by c o m b i n i n g more than one valve, induced peak broadening. hundreds of different f l o w patterns STATICALLY A N D DYNAMICALLY can be established in the chromatoLEAK-FREE PERFORMANCE graphic system. The patented valve design combines the smallest internal volume avail- ACTUATE AUTOMATICALLY able w i t h a unique kinematic loading D e s i g n e d to p r e v e n t d a m a g e t o principle. Even after extended use, valves through the use of precisely these valves are essentially leak-free. adjusted air cylinders, Carle A u t o In fact, a mass spectrometer leak matic Actuators provide rapid, posidetector must be used to detect any tive actuation not obtainable w i t h electrically operated solenoids. leakage.
AUTOMATE SINGLE VALVE APPLICATIONS The economical Series 2000 Single Valve Programmer allows sampling or c o l u m n switching at the predetermined o p t i m u m time. Benefits include greater precision and unattended operation. AUTOMATE MULTIVALVE GC SYSTEMS Multivalve systems of t w o or more valves can be completely automated as the 2100 Series Programmer takes over to perform the most complex analyses . . . for programs w i t h total time intervals ranging from one m i n ute to an hour or more. A N D WE HELP Y O U ACHIEVE O P T I M U M PERFORMANCE The realization that many chromatographers faced similar problems led to the publishing of the first and recently the second e d i t i o n of " I M A G I N E E R I N G W I T H CARLE M I C R O V O L U M E VALVES." The solutions to 23 key valving situations are contained in this valuable reference guide, available at no cost. Write today for your free copy of "Imagineering." W e w i l l also include complete technical details on all of our valving and related instruments. IMAGINEERING WITH CARLE
Series 2100 Programmer
MICRO VOLUME VALVES
Micro Volume Valve
Series 2000 Programmer
C A R L E I N S T R U M E N T S , INC.
1141 EAST ASH AVENUE, FULLERTON, CALIFORNIA 92631 (714) 879-9900 See the Latest New Carle Products at the Pittsburgh Conference - Booths 217 & 218 Circle No. 90 on Readers' Service Card
VOL. 4 1 , NO. 2, FEBRUARY 1969