In LC- What you don't know can hurt you

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News

In LCWhat you don't know can hurt you You have a c o m p l i c a t e d LC c o l u m n full of facts — will you learn them all? You will if you have an LDC refractoMonitor to identify t h e m . In liquid chromatography, the only sure method of d e t e r m i n i n g the total composition of an u n k n o w n mixture is through a universal detector. That means LDC! Check the important features below: The refractoMonitor: per million detection for most com­ Π Can be used with all solvents, in­ pounds in LC; cluding aromatics; Π Has a cell volume of 5 μΙ meaning excellent peak symmetry and vir­ • Detects all classes of compounds, tually no peak spreading; even saturated hydrocarbons, lip­ ids, and non-uv absorbing proteins ; Π Has linear response vs concentra­ to changes as small as tion, meaning that LC is now a D Is sensitive Δ 10~7 Rl Units. This means parts quantitative tool. StabiLity, simplicity of operation, and versatility are built-in extrasKnow your eluents — get this low-cost fact-finder now for your LC analyses. What you learn through the LDC refractoMonitor can help.

Institution West V i r g i n i a University Western Carolina University U n i v e r s i t y of Western Ontario Western W a s h i n g t o n State College Wheaton College W h e e l i n g College Wichita State University College of W i l l i a m and Mary U n i v e r s i t y of W i n d s o r U n i v e r s i t y of W i s c o n s i n , Madison U n i v e r s i t y of Wisconsin, Milwaukee W i s c o n s i n State U n i v e r s i t y , Eau Claire W i s c o n s i n State U n i v e r s i t y , La Crosse W i s c o n s i n State U n i v e r s i t y , Oshkosh W i s c o n s i n State U n i v e r s i t y , River Falls W i t t e n b e r g University College of Wooster Worcester Polytechnic Institute Xavier University Y o u n g s t o w n State University

Awardee Christopher Ferguson C Hayes Powell Richard T. Mulligan Larry E. McMurchie Gale Deborah Downey Kathleen F. Blzot Robert D. Schrader Robin W. Rosser Robert H. C. Notenboom Edward Franzblau Dale H. Karweik Timothy Kelly Richard Chang James M. Magnusen Alberta Seierstad Robert Shattuck Edward Darland Richard S. Danlelson Robert A. Frey Timothy Michael Ryan

Industry Items USM Corporation, Chemical Division, Middleton, Mass. 01949, 617-777-0100, announces that their Analytical Ser­ vices Department will make some of its extensive laboratory facilities and tech­ nical expertise available to industrial clients for commercial testing purposes. The staff has great experience in gel permeation chromatography, gas chro­ matography, and infrared spectroscopy. It also has strong capabilities in ther­ mal analysis, physical testing, and wet chemical analysis, and is especially noted in the scientific community for its work in polymer characterization and identification.

Hewlett-Packard of Palo Alto, Calif., and Chromatix of Mountain View, Calif., have entered into a cooperate product development and licensing agreement to develop and pursue pro­ duction of an electronically tunable acousto-optic filter. First of its type, the filter is a major advance in spectro­ scopic instruments, according to Chro­ matix.

LABORATORY DATA CONTROL, INC. P.O. Box 10235 Interstate Industrial Park, Riviera Beach, Florida 33404

Circle No. 17 on Readers' Service C a r l

80 A ·

ANALYTICAL CHEMISTRY, VOL. 42, NO. 13, NOVEMBER 1970

Duke Standards Co., 445 Sherman Ave, Palo Alto, Calif. 94306, 415-3282400, is a new company formed to specialize exclusively in calibration and reference standards for research and analytical laboratories. The first prod­ uct is a series of fine particle standards, see page 129 A, this issue.