GILFORD INSTRUMENT LABORATORIES INC

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There are many reasons why we have already^updated over 3000 DU'sI And why your DUor DU-2 should be next. ®

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Though it may b e gathering dust, the monochromator from your DU DU-2® is a good one, rugged and reliable. Above all, it's useful, whether you're into industrial or biomedical research, guality control, pollution studies, or similar disciplines. By replacing everything except the monochromator with a Gilford Series 252 update, we create for you a complete, modern spectrophotometer.

For less than $4000, here's what you're getting: 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 GILFORD INSTRUMENT LABORATORIES INC., Dept 7-3-12, Oberlin, OH 44074 (216) 774-1041. • Registered trademark of Beckman Instruments, Inc.

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Oberlin, Ohio 44074 Paris (Malakoff), France Dusseldorf, W. Germany Teddington, Middx., England (216) 774-1041 Telex: 98-0456

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