Manufacturers' Literature
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 SJSl CHROMOSORB IS A JOHNS-MANVILLE REGISTERED TRADEMARK FOR ITS BRAND OF PRODUCTS FOR USE AS SUPPORT MATERIAL FOR GAS CHROMOTOGRAPHY CIRCLE 1 1 9 O N READER SERVICE CARD
104 A · ANALYTICAL CHEMISTRY, VOL. 44, NO. 11, SEPTEMBER 1972
Lab products, Catalog II, 32 p, features low-cost pH meters, Sartorius membrane filter products, syringes, refractometers, Vitrokits, and a selection of products for organic and biochemistry. Science Essentials Co. 714-6398781 454 Ion microprobe mass analyzer, 12 p, gives details of the new IMMA including typical sample materials that can be analyzed and specific uses of the instrument. Applied Research Laboratories. 213-352-6011 455 AA supplies, 12 p, 7682 features new line of hollow cathode lamps for atomic absorption, standard solutions, chart papers, and recorder supplies. Beckman Instruments. 714-871-4848 456 Gases, 56-p catalog of rare and specialty gases includes pure gases, gc carrier gases, gas mixtures for calibration, clinical testing, and nuclear counting; also gas-handling equipment. MG Scientific. 201-991-0100 457 Spectrochemical accessories and supplies, 28-p catalog plus an accompanying 12-p price list include all sorts of spectrochemical supplies with illustrations and detailed specifications. Baird-Atomic. 617-276-6000 458 Analytical instruments, 6-p folder gives photos and brief descriptions of the company's spectrophotometers, diffraction gratings, monochromators, enzyme analyzers, particle counters, refractometers, and others. Bausch & Lomb. 716-232-6000 459 Drug analyses, Vol VI, No. 3, 4 p, gives detailed procedures for drug analysis by use of the company's specially prepared column packings. Supelco, Inc. 814-359-2732 460 Biochemicals, 48-p catalog and price list include information on almost 400 enzymes, nucleotides, diagnostic products, etc., of interest to researchers and clinical lab workers. Worthington Biochemical Corp. 201-462-3838 461 Water pollution apparatus, 24 p, specifications and prices on water lab equipment such as arsine generator, BOD bottles, Coli-tester, Nessler tubes, racks, still, COD reflux kit, etc. Wheaton Scientific. 609-825-1400 462 Refrigerated centrifuges, 32 p, describes PR-6000 and Pr-J centrifuges giving specifications, speed and force tables, and accessories; also covers blood-banking and research applications. Damon Corp. 617-449-0800 463
