Only Porapak delivers this
Directory Graduate Research
1969
Biennial publication of the ACS Committee on Professional Training Covers the universities and c o l leges in the United States and Canada known to offer an o r g a n ized curriculum leading to the doctoral degree in chemistry, biochemistry, chemical engineering, and pharmaceutical or medicinal chemistry.
» baseline separation • speed of analysis While you may get peaks from recent imitations of Porapak, you get this degree of separation only from the original porous polymer GC column packing—• Porapak, made by Waters. Of the eight different Porapaks (two with surface silanization for deactivation of labile sites), Porapak " T " , used in this separation, has the highest polarity and the greatest water-retention capability. Note that the water peak occurs at 2 minutes, well afterthe formaldehyde peak. A n d the entire analysis takes only 31/2 minutes. Check these advantages of the Porapak materials: • Effective separation of aqueous samples; • No need for liquid coating, therefore no bleed; » Large surface areas; - Rapid overload recovery; » No adsorption of polar c o m p o u n d s ; « Most Porapak materials stable to 250°C; » Easy handling for c o l u m n - p a c k i n g efficiency. We have a new catalog covering o u r f u l l line of c o l u m n - p a c k i n g materials for gas and liquid chromatography. Write for it. Waters Associates, Inc., 61 Fountain St., Framingham, Mass. 01701.
# 12 A
WATERS ASSOCIATES
Circle Ms.176or; Reaflsre' Sirvice Gard « ANALYTICAL CHEMISTRY, VOL. 42, NO. 14, DECEMBER 1970
The g u i d e to graduate schools, research, and personnel in these areas. 201 Departments of Chemistry 165 Departments offering Biochemistry 106 Departments of Chemical Engineering 29 Departments of Pharmaceutical or Medicinal Chemistry Lists 2807 f u l l - and part-time staff members, each with outline of career, teaching and research specialties, and list of p u b l i c a tions for the past two or five years. Statistical data on departments include number of Ph.D. degrees conferred during the previous two years, number of staff members, and number of postdoctoral appointments. Other listings include interdisciplinary programs and doctoral theses accepted during previous two years. 1213 pp. with index of names paper bound (1970) $10.00 postpaid in U.S., plus 50 cents Canada and Pan A m e r i c a , plus 75 cents foreign. Order from: Special Issue Sales American Chemical Society 1155 Sixteenth St., N.W. Washington, D. C. 20036
