26 A
ANALYTICAL
CHEMISTRY
ι Mllif
INSTRUMENTATION
fAYLOR COMPARATORS assure speedy pH, Chlorine, Phosphate determinations
TAYLOR GUARANTEED COLOR STANDARDS ASSURE ACCURACY! Speed is assured because Taylor Comparators are so easy to use. No heavy, bulky equipment. No fragile single color standards to handle, all slides for any one de termination are mounted in a sturdy plastic base. And, you get everything you need with your Taylor Comparator . . . slide, base, reagent and accessories. Carrying cases also available at slight extra cost. Continuing accuracy is assured because all Taylor liquid color standards carry an unlimited guarantee against fading, thus no mechanical inaccuracy is pos sible. Taylor Comparators are availa ble for combinations of pH, chlorine and phosphate, complete water analysis and many more determinations. Many slides can be used on one base. SEE Y O U R DEALER FOR T A Y L O R SETS
FREE REFERENCE BOOK tells t h e o r y a n d a p p l i c a t i o n o f pH a n d chlorine control in 3 4 basic in dustrial processes. Also d e scribes a n d illustrates com plete Taylor line. W r i t e for your c o p y t o d a y !
AND CO. 7302 YORK RD. · BALTIMORE-4, MD.
W.A. TAYLOR
devices and microconductometric and other electrochemical techniques. Examples of advanced paper-chromatographic techniques were in abun dance, by Imperial Chemical Indus tries, the Harwell Group, the National Physical Laboratory, Mme. Lacourt, director of the Mierochemistry Depart ment of the University of Brussels, and others. Diverse and Timely Exhibits The most striking and useful aspect of these demonstrations was their diver sity and timeliness. Some were very elaborate and of a degree of perfection comparable to commercial instruments. Others were temporary laboratory re search setups, but in each case, one sensed that he had the privilege of peep ing over the research man's shoulder and witnessing the latest developments in the field. A prodigious amount of work went into these demonstrations and all were replete with charts, dia grams, flow sheets, and reprints of re lated work. The idea is worthy of wider use and is much more effective than formal lec tures. In the latter respect, their soporific value is practically nil. Analysts are greatly indebted to Sir Robert Robinson, Sir Wallace Akers, and to the Honorary Secretary, R. C. Chirnside, for the excellence of this meeting and all its attendant attrac tions. All of this leaves unspoken and unacknowledged the arduous labors of committee members who assisted them. The fascinating work of Professor Clément Duval, of Paris, on analytical uses of the thermobalance continues in new and enlarged surroundings. Despite the fact that he is in the process of moving, we were given an excellent opportunity to learn about the latest developments. This included a visit to the plant where many of the instruments developed by M. Chevenard are made. The Chevenard thermobalance is but one of these and we hope to devote subsequent pages to the description of some of them as soon as more data and illustrations become available. Despite our own advanced state of instrumental development, it is most instructive to see striking examples of superb European craftsmanship. It is not only in ideas that our science is, and always has been, international. It is, of necessity, a challenge and a liberal education.
COMPLETE PROCESS EQUIPMENT from
t^É^k
PRINT
ffpP
PRODUCTION
7#4at U you* Cold, heat, high pressure, vacuum or moisture in any combination? Bowser custom engineered equipment c a n p r o v i d e the r i g h t answer. Temperatures o b t a i n a b l e range from — 1 0 0 ° F. or colder to + 5 5 0 ° F. or more; moisture control from absolute minimum to saturation; and pressures from one micron to 5 0 0 p.s.i. and greater. In a d d i t i o n t o p r o d u c t i o n models, Bowser's experienced technicians also design and construct laboratory size units to test process factors under consideration, and pilot-run models to assure maximum efficiency and economy. Bowser provides c o m p / e f e processing equipment and engineering.
Tuttte fat frvtfaet
