The new LDC/Milton Roy spectroMonitor®D variable wavelength detector. On the outside, the newest variable wavelength detector from LDC/Milton Roy looks very much like its predecessors. But on the inside, where it counts, the spectroMonitor®D variable wavelength detector sets new industry standards for quality and performance. LOWEST NOISE AND DRIFT The new spectroMonitor D variable wavelength de tector delivers the lowest noise (2 χ 10"5 AU peak to peak) and drift (1 χ 10"4 AU/hr.) specifications avail able today. Highly efficient dual beam optical system and state-of-the-art electronics make these specifi cations possible.
HIGHEST EFFICIENCY AND SENSITIVITY STANDARD Our new max N™ series high efficiency , high pressure (1000 psi) fluid cell is a standard feature in the spectroMonitor D. The competition makes you pay extra for high efficiency. In addition, the max Ν series fluid cell has optimized flow dynamics and a true 10mm pathlength to maximize sensitivity ac cording to Beer's Law. Others have tried to beat our noise and drift specifications by cutting cell pathlength, but in the process, they decreased sensitivity. With the spectroMonitor D you get it all - low noise, low drift and high sensitivity. UV/VIS MEASUREMENTS The spectroMonitor D also features absorbance measurements over the entire UV/VIS spectrum (190700nm) without a tamp change. One 35-Watt deute rium lamp is all you need to buy or replace.
Chromatogram illustrating detection limits with the spectroMonitor D.
DIGITAL DIAGNOSTICS New LED diagnostic circuitry, introduced in the spectroMonitor D, provides you with a switch select able digital display of absorbance units, reference and sample energy in mV, lamp current in mA, and zero offset. A TRADITION OF QUALITY AND PERFORMANCE LDC/Milton Roy pioneered HPLC technology over a decade ago. We have put all of our techno logical experience and knowledge into making an instrument that is worth much more than its $5890.00 price. Let us show how the spectroMonitor D can work for you.
LDC/Milton Roy
For further information call our Technical Representatives at 8 0 0 - 3 2 7 - 6 1 8 2 .
3.34 15 0.001 A U F S
r
TIME
PICO GRAM
NAME
2.64 3.34 4.15
31 11 26
BIPHENYL ANTHRACENE PYRENE
SPECTROMONITOR D WAVELENGTH 241 NM RISE TIME 1.0 SEC RANGE 0.001 A.U.F.S.
0.1 A U F S TIME
PICO G R A M
2.64 3.34 4.14
3110 1138 2673
SPHERISORB ODS COLUMN 5 UM 4J5 * 250 MM ELUENT: 80% CH3CN 20%H2C 20 UL INJECTION
U.S. H E A D Q U A R T E R S , P.O. Box 1023S, Riviera Beach. F L 3 3 4 0 4 Toll-free: 800-327-6182, I n Florida: (305) 844-5241 International Telex: 4 4 1 0 9 8 , Domestic Telex: 513479 S U N N Y V A L E O P E R A T I O N . 560 Oakmead Parkway, Sunnyvale, CA 9 4 0 8 6 Toll-free: 800-538-1595, In California: (408) 736-0300 U N I T E D K I N G D O M , LDC U K , M i l t o n R o y House, 52 High Street, Stone. Staffordshire ST15 8 A R England Phone: 785-81-3542 Telex: 36623 WEST G E R M A N Y . M i l t o n Roy (Deutschland) G M B H Jahnstrassa 22-24 6 4 6 7 Hasselroth 2 , West Germany Phone: 6088-2031 (33661 Telex: 4184357 J A P A N , M i l t o n Roy K.K., Takanawa Dai-lchi Building 2 1 - 4 1 , Takanawa 2-Chrome, M i n a t o - K u , T o k y o 1 0 8 , Japan Phone: (03) 473-3181 Telex: 242-4296
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ANALYTICAL CHEMISTRY, VOL. 55. NO. 3, MARCH 1983 · 451 A