INTRODUCING THE MOST OUTSTANDING DEVELOPMENT IN
New Books
Downloaded by UNIV OF NEBRASKA-LINCOLN on September 5, 2015 | http://pubs.acs.org Publication Date: April 1, 1972 | doi: 10.1021/ac60312a756
HIGH PERFORMANCE LIQUID CHROMATOGRAPHY Investigate the finest pellicular packings for • increased resolution • speed of analysis • separations heretofore unattainable • submicrogram samples • narrow bore columns • high sensitivity, low volume detectors • high pressure systems Reeve Angel offers one of the most comprehensive lines of sophisticated column materials available. These materials consist of a pellicle or layer of either cation or anion exchangers, silica, alumina, polyamide, or carbon bonded to the surface of glass beads by a unique chemical process. With these materials, you can perform rapid high resolution analysis by liquid chromatography. They are suitable for use with a wide variety of aqueous and organic solvent systems and show high stability in gradient elution with drastically changing salt concentrations, pH, or solvent composition.
PELLICLE
The range of Reeve Angel Pellicular Packings ION EXCHANGERS
ADSORBENTS
PELLIONEX AT-79
PELLOSILNN
PELLIONEX AP-218
PELLOSILNK
PELLIONEX CP-109
PELLUMINA DN
PELLIONEX CP-128
PELLUMINA DK PELLIDON
reeve angel 9 Bridewell Place, Clifton, N.J. 07014, Phone: (201) 777-4825 Gentlemen: Please send me your data sheets on the new Reeve Angel Pellicular Packings and Pre-packed Columns. NAME TITLE_ INSTITUTION.. ADDRESS
74 A
STATE.
.
J.P.
Also available in prepacked columns. For further detailed information, use the coupon below.
CITY
should be explored in which the sensing devices do not necessarily relate to human attributes (e.g., the human eye imitated in colorimetry). This part of the study provides a valuable overview on clinical automation and on the needs for future improvement of services in accuracy, reliability, and cost effectiveness. The need for a method to evaluate automated assay instruments is mentioned. In Part Three, 77 pages, an economic analysis of the impact of laboratory automation on medical care and costs is given. Various models for studying the involved factors are given and discussed. Costs, as related to automation, are given and evaluated. Actual data are given from studies at five specific hospitals: one is a county hospital, two are general teaching hospitals, one is a pediatric facility, and one is a private volunteer hospital. Although the variables are great, and simple analysis of the data is not possible, this last section appears to be the most valuable and should certainly be read by anyone in a decision-making capacity before purchase of automated clinical instruments or data processing equipment. The study recommends that instruments sized for efficient operation in medium-sized hospitals (smaller modular systems and semiautomated instruments) be developed. The major omission in this study, evident in all sections, is the lack of information on instrument reliability. This is necessarily related closely to costs since maintenance is a vital factor. The situation can become so critical that a laboratory director of a major teaching hospital has a philosophy of "double or nothing." With a large test load, instrumentation must work. The expense of having two completely similar instruments to insure that one works is something to consider.
CIRCLE 165 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 4, APRIL 1 9 7 2
_ZIP_
New Books New Techniques in Amino Acid, Peptide, and Protein Analysis. A. Niederwieser and G. Pataki, Eds. 461 pages. Ann Arbor Science Publishers, Inc., P.O. Box 1 4 2 5 , Ann Arbor, Ml 4 8 1 0 6 . 1 9 7 1 . $ 2 2 . 5 0
In the field of amino acid, peptide, and protein analysis, as in all other areas of scientific activity, the almost exponential increase in the literature forces the scientist to obtain much of his information from reviews such as this rather than from the reading of all the papers dealing with that subject. In this particular field, new techniques are developed every few years
