SPECTRASPAN IV
Choosing your Graduate School? Find out which schools are concentrating in your area.
plasma spectrometry at atomic absorption prices
Involved in Research? ^ _ Learn what papers / ^ i (^ your colleagues are ' • i ? c ^ | writing in your field. 2 N ^ V
Spectraspan IV computer-aided plasma-emission spectrometers offer far more capabilities than atomic absorption units, yet are competitively priced.
The Directory of Graduate 1 0 7 7 Research l u f f
Think about it. For about the cost of an atomic absorption unit, you can have a simple totally-integrated system that performs all common atomic absorption analyses plus analysis of: • Boron and phosphorus • E l e m e n t s which form refractory compounds • C o m p l e x s o l u t i o n s having dissolved-solids c o n t e n t s a s high a s 2 0 per c e n t • High acid c o n c e n t r a t i o n s
Comprehensive listing of U. S. and Canadian Universities offering doctoral programs in chemistry, chemical engineering, biochemistry and pharmaceutical/medicinal chemistry including detailed information on research professors and their publications.
• Trace t o major e l e m e n t concentrations • Difficult e l e m e n t s including s o m e n o n - m e t a l s All Spectraspan IV systems are compact bench-top units designed for sequential quantitative analysis of most elements automatically. Rapid comprehensive qualitative analysis is also available. Conversion from one mode of operation to the other can be accomplished in seconds. These low-cost systems feature unique Echelle Grating Spectrometers that provide high dispersion of all wavelengths from 190 to 800nm, and powerful dedicated INTEL microprocessors that improve operating efficiency by providing overall control, calibration, monitoring, and reporting with minimum operator attention. In addition, Spectraspan IV systems consume little power, and operate on safe, inert argon which eliminates the need for lamps and explosive gases. If you want to increase your capabilities to meet today's analytical requirements without increasing costs, invest in Spectraspan IV. Call SMI now for details. SMI is an acknowledged leader, and the company that has more plasmaemission spectrometers in use by satisfied customers throughout the world than any other manufacturer. 2497.73 -TBOftONT2496'78
m
)7.82—111 W 2497.48
•ll—Fe £ 2496.64
SPECTRAMETRICS INCORPORATED 204 ANDOVER STREET, ANDOVER, MA 01810 (617)475-7015 _ CIRCLE 1 9 4 O N
READER SERVICE CARD
1228 A • ANALYTICAL CHEMISTRY, VOL. 49, NO. 14, DECEMBER 1977
Whether you are a recognized authority in your field, just about to start your graduate study, or concerned with research in chemical science, it is vital for you to know w h o is working in your area, what they are doing, and where they are doing it. The Directory of Graduate Research lists complete information o n universities—details on professors, the papers they have published, their areas of specialization. For added convenience, individual researchers are also listed alphabetically and individual telephone numbers are included in most cases. Researcher or graduate student, you will find this comprehensive, 868-page, 8V2 x 11 volume one of the best investments you can make. The cost is just $25.00. To order your new 1977 copy, call: (202) 872-4364, write or mail the coupon below.
Dept 101 American Chemical Society 115516th Street N.W. Washington, D. C. 20036 Please send me copies ol the Directory ol Graduate Research. 1977 Edition @ $25.00 a copy Name Affiliation (if any) Address: D Home D Organization
City
. State
Zip
. Phone _
