T h o u g h it m a y b e g a t h e r i n g dust, t h e m o n o c h r o m a t o r from your DU® or DU-2® is a g o o d o n e , r u g g e d a n d r e l i a b l e . A b o v e all, it's useful, w h e t h e r y o u ' r e into industrial or b i o m e d i c a l r e s e a r c h , guality control, pollution studies, or similar disciplines. By r e p l a c i n g e v e r y t h i n g except t h e m o n o c h r o m a t o r with a Gilford Series 252 u p d a t e , w e c r e a t e for you a c o m p l e t e , m o d e r n s p e c t r o p h o t o m e t e r .
Solid-state linear absorbance photometer: L.E.D. display to 3.00Q4; readout in absorbance and concentration units; recorder calibration controls; BCD output for interface with printers, computers; easy operation, no need for sensitivity or dark current adjustments, no shutters.
NBS-traceable absorbance standards: Easy absorbance calibration at three points in absorbance range; routine determination of photometric linearity.
Four-place manual cuvette positioner: Precise cam-operated positioning and sliding aperture mask for routine measurement with standard, micro, or flow-through cuvettes; integral full-flooding thermoplates for circulation of fluids from constant temperature source; economical option for automatic cuvette positioning.
Optical bench a d a p t e r / d u a l light source: Tungsten and deuterium lamps plus new optical components for enhanced energy throughput; easy interchangeability of standard positioner with optional accessories for enzyme analysis, gel electrophoresis, thermal melts, rapid sampling, and more.
Solid-state power supply: Stable, transistorized power for entire spectrophotometer; no batteries, reduced maintenance.
You'll find nothing with matching capabilities at anything NEAR the price. For further information, call or write G I L F O R D INSTRUMENT LABORATORIES INC., Dept 5-7-12, Oberlin, O H 44074 (216) 774-1041. • Registered trademark of Beckman Instruments, Inc.
®
gilford
INSTRUMENT
Oberlin, Ohio 44074 Paris (Malakoff), France Dusseldorf, W. Germany Teddington, Middx., England (216) 774-1041 Telex: 98-0456 CIRCLE 85 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 51, NO. 2, FEBRUARY 1979 · 193 A
