THE NEW PERKIN-ELMER MODEL 221 INFRARED SPECTROPHOTOMETER gives every chemical laboratory the finest in accuracy, ease and versatility of infrared analysis
Newest in Perkin-Elmer's line of analytical aids, the Model 221 assures that your laboratory — with this in strument — can achieve and maintain a strongly compet itive position in the field of infrared chemical analysis. The powerful Model 221 offers completely new concepts of automatic spectrum
