The Pace-Setter: The Perkin-Elmer R12A NMR Spectrometer.

Circle No. 138 on Readers' Service Card

34 A · ANALYTICAL CHEMISTRY, VOL. 42, NO. 14, DECEMBER 1970

PERKIN-ELMER

The R12A is well-known as a re­liable, easy-to-use spectrometer. Innovations in its design have made it the most advanced instrument in its market. The R12A is:

First to provide a permanent mag­net system, fully thermostatted so that the stability of field and of res­olution are guaranteed. The magnet stability permits long periods of operation without adjustment—vital for t ime-averag ing work, fast throughput of service work, or classroom experiments.

First to provide the convenient and accurate Flowchart® recording system for fast, pre-aligned, error-free results.

First to provide an easy-to-use cross-coil spin decoupling system. The fully-calibrated decoupler al­lows top quality, noise-free de­coupled spectra to be obtained quickly.

First to provide a true "push­button" internal lock which allows operators to field lock immediately with differing samples without ad-

justing parameters. First to provide a switch-on fluo­

rine accessory which requires no circuit tuning or unit replacement.

For full details, write to Instru­ment Division, Perkin-Elmer Corpo­ration, 702 Main Avenue, Norwalk, Conn. 06852.