Extend \bur Range In U V-Visible Spectrophotometry This new Van an Cary 118CX covers the range of two instruments . .. and performs better than either! A remarkable new photomultiplier detector extends the wavelength range to 170 nm, further into NEW CARY 118CX the UV than any other spectrophotometer . . . yet loses none of the visible range! In fact, performance in the visible is significantly better: at 800 nm the signal-to-noise ratio is improved 100 fold! Biochemists can now observe both visible chromophores, such as chlorophyll or other photosynthesis pigments, and far-UV chromophores such as peptides . . . with no change in the instrument. Inorganic Chemists can study charge transfer complexes far into the UV and, on the same run, observe visible chromophores such as copper salts . . . with no loss in performance. Besides its extended range, the 118CX offers superior capability for analyzing micro samples, high absorbance or turbid samples . . . a unique calibrated zero suppression . . . a reversing scan and chart drive for overlaying spectra . . . and many other exclusive conveniences. With this timeproven leader now ever further ahead, why take a chance? Specify the Cary 118CX... from Varian of course. For all the facts ask for our new 118 brochure—write to: Varian Instruments, 611 Hansen Way, Palo Alto, CA 94303—or circle Reader Service No. 10.
varian 740 A · ANALYTICAL CHEMISTRY, VOL. 47, NO. 8, JULY 1975
A 118 Bonus! With our standard high intensity tungsten-halogen (visible) source, you can run continuous spectra from 800 nm afl the way down to 220 nm . . . without changing over to the deuterium (UV) source . . . and with no significant loss in performance! For an Application Report on this "extended scanning," check Box No. 11.
