REPORT FOR ANALYTICAL CHEMISTS
of the manufacturer in determining the variables of a process system from a sample handling position; instrument mounting position; in strument housing condition; and useful instrument information out put. All these factors have to be evaluated in terms of their eco nomic justification to support the use of process instrumentation in an industrial manufacturing stream. Application laboratory support in
neering and customer applications support is necessary to train and in form technical people who use their standard laboratory equipment. They feel that this support is neces sary to maintain existing customer relationships and to support their growing marketing position in the laboratory field. Applications support in the proc ess control field requires a great deal more involvement on the part
the latter category of process con trol has proved to be much more of a requirement than previous sup port required for standard labora tory equipment. The sample handling problems associated with the above de scribed materials have been found to be much more pronounced in "onstream" analysis than in static laboratory analysis because human participation is being relieved from the loop. Therefore, it requires a joint participation on the part of the user and the instrument manu facturer to work out mutually satis factory automatic sample handling methods that will meet the instru mental requirements of the sensing device. Such application support as described above is found to be of basic economic necessity for the operation of a successful instrument company.
Application Engineering at Applied Research Laboratories
HIGHLY SELECTIVE FLORISIL? ADSORBENT FOR PRECISE CHROMATOGRAPHIC SEPARATION The hard, porous, white granules of FLORISIL synthetic adsorbent are uniform in size, highly sorptive and stable in either water or organic solvents. FLORISIL is a unique selective adsorbent used in both labora tory chromatographic analyses and production separations. For example, FLORISIL is used for chromatographic separations of vitamins, steroids, alkaloids, hormones, antibiotics and pesticide resi dues. It also removes color, acids and other contaminants from phar maceuticals. And, FLORISIL is useful as a catalyst in cracking partially oxidized hydrocarbons, in gas and gas liquid partition chromatog raphy, and for critical finishing of complex hydrocarbon compounds. FLORISIL'S characteristics may suggest further uses to you : Color: White
cr nDicn® Γ LUrtlOl L
Mg 0 Si Ο., Na so
15.5±0.5% 84.0 ±0.5% 5% avg> ( 1 0 % m a x )
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Specific Surface (B.E.T.) : 298mVgm Pore Volume (ml liq. N 2 /gm) : 0.461 Bulk Density: 0.634 p H : Aqueous slurry (1 part solids—Sparts water) =8.5
For free 14-page booklet, or free samples of FLORISIL, write to Floridin Com pany, Dept. X, P.O. Box 989, Tallahassee, Fla., or contact nearest sales office.
FLORIDIN COMPANY
Sales Offices: P.O. Box 989, Tallahas see, Florida · 375 Park Avenue, New York 22, New York · 8000 Bonhomme Avenue, St. Louis 5, Missouri · 292 Meadows Building, Dallas 6, Texas Circle No. 1 on Readers' Service Card 40 A
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ANALYTICAL CHEMISTRY
Applied Research Laboratories, Inc., manufactures both optical emission and x-ray fluorescence in strumentation primarily for indus trial research and production con trol. A recent development is the electron microprobe x-ray analyzer which is used for basic research on extremely small areas. Since only a small percentage of equipment made by Applied Re search Laboratories may be cate gorized as mass production items, the majority of ARL's products are the result of application engi neering. ARL's highly specialized instru ments are made to order for each customer's particular analytical ap plication. ARL's principal instruments and their applications appear below : In the optical emission field are: production control Quantometers for direct-reading elemental analysis of metals, nonmetals, oils, ores, slags, and all uses where spectrochemical methods are applicable ; the Quantovac which is designed especially for production con trol in the iron and steel industry; and the Quantograph, a versatile unit, either spectrographs or direct-reading, which is finding increased applications in space age technology. In the x-ray fluorescence area are: the vacuum x-ray Quantometer and
