The new Heath/Schlumberger 721 Programmable Cell UV-Visible Ratio-Recording Spectrophotometer has baseline flatness of .0005A*, photometric precision better than ±0.001 A, better than 0.1 nm resolution, outstanding scan rate/resolution ratio, less than 0.01% stray light, less than 0.001 A zero drift, programmability...and it gets there in an entirely new way.
Compare it with any recording spectrophotometer made by anyone, at any price. Write Dept. 560-01 for our free 18-page brochure which describes the new 721 system and the new 707 conventional double-beam system. We're the group to watch in spectrophotometry HEATH
Schlumberger
Heath/Schlumberger Scientific Instruments Benton Harbor, Michigan 4 9 Q 2 2 CIRCLE 58 ON READER SERVICE CARD
•Limited only by cell matching
