. fnom the specialists in liquid chromatography
Balancing act? In the field of physical chemistry?
Newest UV monitor outperforms all others.
Why
Preference is given to papers dealing w i t h fundamental aspects of atomic and molecular phenomena. Emphasis is placed on reportage of w o r k involving new concepts-new t e c h n i q u e s - a n d new interpretations.
settle for less? The most sophisticated UV monitor on the market costs only $ 1 3 9 5 . It's the Chromatronix 220 Absorbance Detector. Our Model 220 gives you superior resolution—shown at right compared to a popular model of a leading competitor when both were operated at a full-scale range of 0.16 absorbance units. It gives you easily quantifiable curves, since output is linear from .0002 to 1.0 OuTS absorbance units. It gives you the ability to detect very low concentrations by using our 1 cm path length cell to get a sensitivity of .0002 A per centimeter. It keeps very high concentrations on scale when you use our .05 cm path length cell to get a linear range up to 20 A per centimeter ( l . O A - f - .05 cm). It gives you the accuracy of true double-beam optics, in which the output is the difference between beam absorbance in the sample cell and in the reference cell. It gives you two switch-selectable wave lengths, 280 nm and 254 nm—so you can cope with compounds insensitive to one or the other. And if you opt for our two-channel version (Model 230, $1795), it gives you simultaneous read-outs of absorbance at 280 n m and 254 nm. This is a monitor you should know more about. Ask for a demonstration or send for 4-page product bulletin right now.
Theirs
Chromatronix, Inc., 2743 Ninth Street, Berkeley, CA 94710. Phone (415) 841-7221.
CHROMATRONIX •
A N A L Y T I C A L CHEMISTRY, VOL. 4 4 , NO. 12, OCTOBER
N o w appearing biweekly, the JOURNAL OF PHYSICAL CHEMISTRY'S forty or more articles per issue cover a w i d e range of subjects that are of interest to ALL physical chemists. You'll profit from the full articles, notes and c o m m u nications published in the journal . . . since only those w h i c h represent distinct contributions to the literature are accepted. For balanced reading, subscribe to the JOURNAL OF PHYSICAL CHEMISTRY now. Just complete and return the form below.
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O f course. The American Chemical So ciety's Journal of Physical Chemistry does it all the time. It maintains an excellent balance between reporting on classical areas of chemistry and very modern struc tural quantum mechanical areas.
1972
