News & Views
Chromosorb "Century Series" polymer supports are now available in 7 grades for more versatility than ever. Chromosorb 101 Fast, efficient separation of free fatty acids, glycols, alkanols, alkanes, esters, ketones, aldehydes and ethers.
Chromosorb 102 For light and permanent gas and low molecular weight compounds. No tailing of water and alcohols.
Chromosorb 103 Efficient, quick separation of amines, amides, alcohols, aldehydes and ketones.
Chromosorb 104 Highest polarity. Efficient separation of nitriles, nitro-paraffins, xylenols, and oxides of nitrogen and ammonia.
Chromosorb 105 Intermediate polarity. Separates aqueous mixtures containing formaldehyde and acetylene from lower hydrocarbons, water from organic compounds.
Chromosorb 106 Non-polar, high surface area resin having different retention characteristics among Century Series. Provides efficient separations of C2-C5 acids from C2-C5 alcohols.
Chromosorb 107 Moderately polar surface. Provides excellent separation of formalin and acetylene from low hydrocarbons. Retention characteristics different than other Century Series polymers. For more specific information on "Century Series," write: Johns-Manville, Box 5705-C, Denver, Colorado 80217. Also available in Canada and overseas. Cable: Johnmanvil.
Johns-Manville CHROMOSORB IS A JOHNS-MANVILLE REGISTERED TRADEMARK FOR ITS BRAND OF PRODUCTS FOR USE AS SUPPORT MATERIAL FOR GAS CHROMOTOGRAPHY. CIRCLE 1 0 9 O N READER SERVICE CARD
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ANALYTICAL CHEMISTRY, VOL. 44, NO. 6, MAY 1972
nique which contains specific LC application information. For copies of these periodicals, write to Chromatec, Inc., 30 Main St., Ashland MA 01721. Environmental Sciences Corp., 9200 Leesburg Turnpike, Vienna, VA 22180, has acquired Hazelton Laboratories, Inc., a wholly owned subsidiary of TRW, Inc. Hazelton is a large, independent environmental and life science contract research laboratory with facilities in Vienna, VA. Utopia, P.O. Box 863, Caton Farm Rd., Joliet, IL 60434, with experience in the manufacture and sale of analytical and biomedical instruments, has purchased Unimetrics Universal Corp. of Anaheim, CA. Unimetrics makes micro syringes and specialized dispensing deDow Chemical U.S.A., Midland, MI, has announced that Bio-Rad Laboratories of Richmond, CA, will market Dow's line of hollow fiber devices. BioRad Laboratories are located by 32nd and Griffin Ave., Richmond, CA 94804. Du Pont has sold the rights to its system for machine retrieval of patent information to the IFI/Plenum Div. of Plenum Publishing Corp., Washington, DC. Plenum will use the Du Pont system to augment a patent information system it now markets. The Du Pont system now provides machine access to a file of about 140,000 U.S. Patents. The IFI system now includes over 275,000 U.S. chemicals and chemical processes of interest. The combined system represents an investment of over $6 million and 15 years' experience in development. Etec Corp., 3392 Investment Blvd., Hayward, CA 94545, and Siemens AG, Munich, West Germany, have entered into an international sales agreement for the Etec Autoscan scanning electron microscope. Etec will serve the U.S., Canada, and Mexico, and Siemens will serve the other countries of the world as exclusive sales distributor. Palmer Research Laboratories, Ltd., a United Kingdom firm, offers cost-effective organic research, development, and manufacture. The company has a large complement of instrumentation such as nmr, GC, and microanalyzers for problem solving. Scientific Resources, Inc., 3312 Central St., Evanston, IL 60201, is a new company which acquires used scientific instruments for refurbishment and resale to laboratories around the world. Analytical instruments, nuclear equipment, and lasers are of interest.
