assemble your own rotameter
Manufacturers' Literature Microscopes. A 40-page, pocket-size booklet describes microscopes for sci entific, industrial, and educational ap plications. The specialized tissue cul ture, stereoscopic, and hand micro scopes are also included. Nikon, Inc., 023 Stewart Ave., Garden City, Ν. Υ. 11530 610
to fit your laboratory flow needs
Instrumentation. A new catalog lists instruments for determining sulfur, carbon, oxygen, hydrogen, and nitro gen in metals and other materials. Standard samples, sampling devices, and other supplies are included. Laboratorv Equipment Corp., 1415 Hilltop Rd., St. Joseph, Mich. 49085 611 High Purity Materials. High purity metals, salts, and compounds and prod ucts manufactured from these mate rials are among the 1500 items con tained in a new catalog. Hall Laboratorv Products Corp., 200 Express St., Plainview, N. Y. 11S03 612
Rotameter Kit
Rare and Specialty Gases. Among the items listed in this 48-page catalog are 28 pure gases, 40 mixed gases, and gas handling equipment and accessories. Air «eduction Co., 150 E. 42nd St., New York, Ν. Υ. 10017 614
Rotameter assembled f r o m kit
INTERCHANGEABLE ROTAMETER KIT You can select — building block style — the exact metering tube and f l o a t c o m b i n a t i o n , scale length, and connection configura tion you need for greatest flexi bility in meeting your metering requirements. Sixteen different interchangeable tube and float combinations per mit a choice of max. flow ranges from 0.61 to 1900 cc/min of water (51 cc/min to 126 SCFH air). Standard calibration curves are provided for each tube and float combination. Request Bulletin DS-1214 BROOKS I N S T R U M E N T DIV. EMERSON ELECTRIC CO. HATFIELD, PENNA. 1 9 4 4 0
EMERSON
sales engineering offices in principal Β cities throughout the world Circle No. 184 on Readers' Service Card
Radiochemical Catalog. More than 1200 labelled compounds and primary radioisotopes, as well as radioactivity standards and nuclear laboratory sup plies and accessories, arc presented in a 90-page 1909 catalog. Amersham/ Searle Corp., 2000 Nuclear Dr., Des Plaines, 111. 00018 613
247
Grinding and Polishing Crystals. In structions on reconditioning fogged or scratched NaCl, KBr, and CsBr win dows are detailed in a four-page il lustrated folder. Techniques in cleaving and grinding crystals arc also described. Barnes Engineering Co., 30 Commerce Rd., Stamford, Conn. 00902 615 Air Pollution Testing Services. Air pol lution testing, source and laboratory analyses, and correction services are described in a four-page brochure. Preeipitair Pollution Control, Inc., Chimnev Rock Rd., Bound Brook, N.J. 616 Infrared Detectors and Semiconductor Lasers. A new product file folder in cludes information on gallium arsenide emitters, indium arsenide lasers, photoconductive infrared detectors, detector pre-amplifiers, and gas shielded dewars. Raytheon Co., Laser Advanced De velopment Center, Foundry Ave., Waltham, Mass. 02154 ' 617
ULTRASONIC AEROSOL GENERATORS for SPECTROPHOTOMETRY Plasma Torch Flame Photometer Atomic Absorption Multisons model 180 VF Aerosol output: max. 12.5 cc/min Price complete with submersible transducer: $975. Multisons model 125 FF Aerosol output: max. 3.3 cc/min Price complete with submersible transducer: $570. ULTRAMIST III nebulizer Aerosol output: max. 1.1 cc/min Price complete: $249.95 As described in Analytical Chemistry: Vol. 40, No. 1, 253-54 Jan 68 Vol. 40, No. 12, 1918-20 Oct 68 PIONEERS IN APPLIED SONICS AND ULTRASONICS
M
MACROSONICS CORPORATION 880 Elston St. Rahway, N.J. 07065 FRENCH REPRESENTATIVE: Societe Luziesa, 70 Rue J.P. Timbaud, 75 Paris XI Tel: 023 · 48 · 22 Circle Νo. 169 on Readers' Service Card
VOL. 41, NO. 3, MARCH 1969 ·
139 A
