NEW PRODUCTS DIGEST Typewriter Plug-in Computer Unit
The Logic-Pak connects the IBM model 735 Selectric typewriter to the DEC PDP-8. -8 S. and -8 I computers. According to the manufacturer, the new device provides accurate inputoutput, more than 150 words per minute, upper and lower case and twocolor ribbon shift. automatic tab control, and interchangeable type balls which may include mathematical symbols. Logic, Inc. 62
Nuclear counting system w i t h automatic sample changer
Shown for the first time at the A C S Chemical Exposition held April 2 4 , 1968, in San Francisco, Calif., the Hewlett-Packard nuclear counting systems feature ultra-low background (0.1 count per minute). 1 million counts per minute range with I % counting loss, I20 sample holders in a choice of sizes, gas-flow or scintillation detectors, crnd easy system expansion and conversion. Model 5.5604 automatic sample changer holds 12 magazines with 1 0 samples each. Magazines can be removed and immediately replaced in nine of the magazine positiorzs at any time, even during operation. A lock-in feature prevents the holders from falling out, no matter what position the magazine is held in. Magazines have numbered compartments for each sample holder, minimizing cimbigriity concerning the sample number of a given holder. Empty holder or magazine positions are automatically passed ol'er, so that it is not necessary to have a holder in every position. For special combinations of instruments or for special uses or expanded capability, Hewletf-Packard offers a variety of other modules which interface with the nuclear counters. Model H P -1116 is a general p~irpose computer which interfaces with the company's digital data output instruments. I t is supported by a f i l l 1 set of ,soft+iare including F O R T R A N , A L G O L , and BASIC conipilers. Model H P 2547A coupler accepts parallel BCD information for serial transmission to card punches, tape punches, typeIt,riters, arid magnetic tape recorders. Also available are the 5584A dual timing pickoff, 5 5 8 0 4 N I M power supply, 5 5 8 5 4 fast coincidence, 5582A linear amplifier, 5 5 8 3 4 single channel analyzer, 55904 scaler-timer, and a variety o f other accessories, including blank filler panels for a console look. and stationery supplies. Hewlett-Packard 61
380 Environmental Science and Technology
Flying Insect Control
Model 224 flying insect controller is designed for use inside the processing area. Escape-proof design prevents killed insects from falling into and contaminating food or other material being processed. The company offers. in addition, engineering services for design of systems guaranteed to solve specific flying insect problems. Gilbert 63 Electronics. Inc. Copolymers
Poly-Floc 1100 series is a line of very high molecular weight copolymers for use in general clarification and thickening operations in fresh water. nianufacturing processes, and waste water. According to the manufacturer. these copolymers perform well in the presence of aluminum or iron salts, in waters of varying p H or chemical content. Anionic or cationic copolymers are 64 available. Betz Laboratories, Inc.
2 minute determination!
I
NITROGEN in WATER or
Oxygenated Hydrocarbons
I
Vapor Detector
A portable, solid-state, electronic analyzer, using the ultraviolet absorption principle, provides detection and readout of vapor concentrations of mercury, acetone, aniline, benzene, benzyl, alcohol, diethyl acetal, illuminating gas, naphtha, pyridine, toluene, xylene, and other toxic vapors. The kind of sample vapor must be known and must be relatively uncontaminated by fog, dust, and smoke. Audio or visual alarm, recording equipment, o r special explosion-proofing, are available, upon special order. Sunshine Scientific Instrument. Inc. 65
- 102?/, of theoretical - 9 8 O 6 o f theoretical 59.9 n g N total - 9gC6 of theoretical 59.9 ng N t o t a l - 9 7 c : of theoretical
2 Mn(N01)z soln. [IO n g N / @ l I56 5.6 pl injected
Oil Detection and Control System
A continuous automatic monitor for trace oil contamination in condensate streams detects oil from emulsions with oil content no more than 25 p.p.m. to slugs of pure oil. T h e unit features all solid state circuitry, sensing chamber, control panel, sample cooler, automatic thermal regulator, and interconnecting cable. Controls are included for a solenoid and alarm. Bull & Roberts, Inc. 66 Rubber Liner Scrubber
A specially-designed, 90-foot tall, rubber lined fume scrubber removes both solid fluoride particles and hydrofluoric acid fumes in a midwestern chemical plant installation. Lightweight and corrosion resistant. the scrubber will provide long life and minimum maintenance. according to the company. Heil Process Equipment Corp. 67
3 Mn(N03)2 soln. [IO n g N / p l l 56
3 Ni(N03)2 soln. [10.7 n g N / p l l '3Ni(N03)2 soln. L10.7 n g N / p l l
ng N total n g N total
m Long established as an ideal specific G L C detector and total constituent analyzer, the Dohrmann Microcoulometric Titrating System now becomes more useful than ever in trace elemental analysis. New methodology now permits determination of total organic or inorganic nitrogen in Lvater or oxygenated hydrocarbons. . . in minutes. . . with a mininium of sample preparation. This technique consists of pyrolysis of the nitrogen-containing sample to ammonia over a nickel catalyst, specific scrubbing and automatic titration. The Dohrmann System is modular in concept to provide the flexibility needed for this and a variety of other specific analyses. Sensitivity of one nanogram allows analysis of nitrogen, sulfur and halogen containing cornpounds down to the 0.1 ppm level. Absolute specificity is achieved by use of interchangeable selective titration cells. The Dohrmann Nitrogen Analyzer for total nitrogen in ii'ater is particularly suited for water quality control, industrial effluent monitoring. and as a replacement for most Kjeldahl determinations. For a detailed description of the technique and instrument specifications, please urite for Applications Data File P-2.
I N STR U M E NTS C 0M PANY A N A L Y T I C A L I N ST RU M E N T S
D 1V I S I O N
1062 LINDA VISTA AVENUE, MOUNTAIN VIEW. CALIF. 94040 A SUBSIDIARY OF INFOTRONICS CORP. Circle No. 30 on Readers' Service Card
Volume 2, Number 5, M a y 1968 381
Solve pollution problems with
AIR POLLUTION REAGENTS
WllEY and INTERSCIENCE books POLLUTION A N D MARINE ECOLOGY Edited by THEODORE A. OLSON, University of Minnesota; and FREDRICK J. BURGESS, Oregon State University.
Harleco offers its Air Pollution Reagents in accordance with Selected Methods forthe Measurement of Air Pollutants; U.S. Department of Health, Education & Welfare; Public Health Service. Quality, reliability, and uniformity are the important requirements when choosing Air Pollution Reagents. By using Harleco, test results from various locations can be accurately compared to each other with the assurance that Harleco reagents are uniformly manufactured on a batch-to-batch basis. This consistency in our manufacturing operation has made Harleco the leader in its field for over 4 decades. Procedures include: Sulfur Dioxide-West & Gaeke; Sulfur Dioxide-West & Gaeke Automated; Sulfur Dioxide-Hydrogen Peroxide; Nitrogen Dioxide and Nitric Oxide-Saltzman; Nitrogen Dioxide and Nitric Oxide-Automated; Oxidants Determination-Neutral Buffered Potassium Iodide; Oxidants Determination-Automated; Oxidants Determination-Alkaline Potassium lodide; Aliphatic AldehydesMBTH; Aliphatic AldehydesAuto mated ; Acrol ei n-4 Hexy IForma Ide hydereso rci no1; Chromotropic Acid; Sulfate in Suspended Particles-Barium Sulfate. Also available is the CAMP (Continuous Air Monitoring Project) reagents supplied in Stable DRY-PACK@ form. Write Directly to Harleco, 60th and Woodland Avenue, Philadelphia, Pa. 19143, Specifying the “Air Pollution Reagents” Publication No. 633
Circle No. 25 on Readers’ Service Card
382 Environmental Science and Technology
Contains papers presented in March 1966 at a conference held at Texas A & M University. They deal with the ramifications of the problems and solutions of marine and water pollution. Valuable for ecologists, marine biologists, chemists, and engineers. An INTERSCIENCE book.
1967
364 pages
$12.00
Circle No. 33 on Readers’ Service Card
AQUEOUS WASTES: FROM PETROLEUM A N D PETROCHEMICAL PLANTS
Water Quality Monitoring System
Model 9000 water quality monitoring system includes the modules pictured (from top) : analog to digital recorder. analog 24-point recorder, signal conditioning module, and sampling chamber module. T h e unit, which was introduced at the Pollution Control Exposition at Houston, Tex., last month (April 3-51, with modifications can perform control functions as well as sensing and recording. Robertshaw Controls Co. 68
By MILTON R. BEYCHOK, Fluor (England) Ltd. “This new, well illustrated, and well indexed book by a petroleum and chemical engineer with nearly 20 years background and experience is going to become a ‘must’ for all operations people in the processing of petroleum . . . public health and other groups. . .“-World Petroleum
Oil Spill Dispersant
1967
Alken OSD (oil spill dispersant) is a specially formulated liquid dispersing agect f o r all types of oil, gasoline, or hydrocarbon spills on land o r water. Available in 55-, 30-, and 15-gallon drums. Alken-Murray Corp. 69
Special miniature cable is available uith low inductance ( 0 061 microhenries per foot at 100 kilohertz), low impedar.ce (34 ohms), and tighter tolerances than R G cables of the same size. The center conductor of the new cable is 0 059 inch o.d., with a dielectric of solid polyethylene, 0.195 inch 0.d. Attenuation is 18 db. per 100 feet (maxito m u m ) at 400 MHz. and -55’ +85“ C. The cable is designed for circuits that need good pulse response. International Silver Co. 70
$12.95
Circle No. 3 4 on Readers’ Service Card
AERIAL DISCOVERY MANUAL By CARL H. STRANDBERG, ltek Data Analysis Center. I
Miniature Coaxial Cable
370 pages
A self-study guide or college text, the volume thoroughly discusses aerial photographic interpretation, Emphasis has been placed on using this valuable tool to combat water pollution. 1967
249 pages
$14.95
Circle No. 35 on Readers’ Service Card
JOHN WlLEY & SONS, Inc. 605 Third Avenue New York, N. Y. 10016
