new products digest hard spherical beads, this styrene divinylbenzene copolymer is highly durable in attrition tests, is unaffected by osmotic and thermal shock, and possesses discrete pores which allow rapid diffusion of ions into and out of the interior of each particle. the company says. Diamond Shamrock Chemical c o. 63 Odor Control
Mist Collector
The H C Series Mist Collector, now available in standard modular design, removes 99.9%' oil droplets from the air and reclaims a substantial amount of liquid, according to the company. Designed to increase efficiency, reduce damage, and eliminate nuisances in industrial processes where a high degree of evaporation can cause condensation problems, the equipment is available in modular sizes from 2000-30,000 cubic feet per minute, featuring manomometers with a range from 1-3 inches w.g. of pressure. 61 Fisher-Klosterman, Inc.
A n odor control system provides instant abatement, and effectively isolates plant malodor, is efficient, effective, and economical, according to the manufacturer. Chemscreen is a fully integrated system employing vaporizer equipment in conjunction with chemical counteractants which neutralize malodors from such industries as pulp and paper mills, fertilizer plants, reclamation and waste disposal plants, and canneries. Rhodia. Inc. 64
Winning Numbers to Water Analysis BE47V BE47 ss47 B9
In combination they assure excellent drainage of vacuum filtered fluids. Autoclavable B9 filters are white with a 3.1 mm grid. Average porosity, 0.45 micron. Ideally used w'ith anyone of three specially designed apparatus units: SS 47, stainless steel, 500 volume: BG 47, borosilicate glass, graduation marks to 500 ml. Conical shaped, both take 4 7 mm membrane. Effective filter area approx. 9.6 sq. cm. BG 47V, borosilicate glass, verticalwall shaped, 120 ml capacity, graduated at 50 and 100 ml. Use coupon for free booklet.
Water Pollution Abatement
A new process for aerobic waste decomposition has been developed. The process involves extended aeration in treating volatile, toxic, and other organic materials in industrial and municipal wastes, and features an operating range of 0.15-0.4 I pounds of biological oxygen demand per pound of activated sludge. Petro-Tex Chemical Corp. 62 Cation Exchange
Duolite ES-26 is a macroporous cation exchange resin, designed for applications requiring outstanding chemical and physical stability. Consisting of
The first name in filtration SCHLEICHER & SCHUELL (603)352-3810 Differential Pressure Transmitters
Maximum stability under severe environmental conditions, excellent performance, and trouble-free construction are features of the E13 Series of electronic differential pressure transmitters, according to the manufacturer. The transmitters operate on the principle of force-balance to measure flow.
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Schleicher & Schuell, Inc. ES-469 Keene. New HamDshire 03431 Please send Bulletin 90 for information on Membrane Filter Techniques.
l N ame Address City
State
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Circle No. 29 on Readers' Service Card
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Tolume 3, Number 4, April 1969 401
CLEAN AIR Costs Less Per CFM With NEW
liquid level, density, and low pressures. Available in three models, the devices are designed for maximum working pressure from 500-6000 psig. at ranges between 0-5 to 0-850 inches of water differential. Foxboro Co. 65
agents for each test. Housed in a formica case, the photometer measures 9" x 8" x 5", and operates electrically or from an optional dry-cell battery for field use. Delta Scientific Corp. 68 Air Sampling Unit
A device for collecting samples of particulate matter in large volumes of air features a quick-change filter holder. The Hi-Volume Air Sampler is compact, and contains a 24-hour flow recorder and 7-day timer for added convenience and efficiency, according to the manufacturer. W. H. Curtain & co. 69
PACTECON
Liquid Measurement
Water and Waste Treatment
The Series 94-100 Diaphragm Metering Pump is designed for small water and waste treatment applications, providing metering of such chemicals as alum, hypochlorite, and soda ash. The unit features quick installation, fancooled electric motor, built-in antisyphon valve, and corrosion resistant construction. The company says the pump is capable of metering 0-20 gallons per day against pressures to 100 p.s.i. Wallace & Tiernan, Inc. 66
A device for use in measuring, metering. and monitoring fluid flow rates is available. The Flow Controlment is a combination of two basic elementsa flowmeter and a two-way valvewhich can be supplied as a single unit or as individual units. The company says the device was designed for use in electronic cooling and ventilating systems, but has many applications, and is available in various sizes, pressure levels, fluid compatibility, interface connections. and mounting configurations. Mack Co. 70
Plastic Pipes
Polyethylene pipe in diameters up to 40 inches is available for use in potable water and waste disposal systems. The Aldyl D pipe is designed for municipal sewers, industrial waste disposal, gas gathering in oil fields, water distribution, and other pressure piping. The company claims that the pipe's light weight and flexibility provide advantages in a variety of applications. For example, the Aldyl D pipe can be laid in ditches which are not even or straight; it can be inserted into existing sewers; floated across lakes and rivers and sunk in place with metal collars; and made to conform to contours of lake and river bottoms. DuPont Co. 67 Water and Waste Analysis System
Circle No. 19 on Readers' Service Card
402 Environmental Science & Technology
The Series 260-1 Analysis Systems for rapid and accurate testing of up to 48 different water and waste elements is available. Each system consists of an individually standardized photometer, procedure handbook, optional automatic-zeroing titration outfit, and custom drawn chart with required re-
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Measuring Thermal Decomposition
A thermal analysis system, developed for measuring thermal stability, volatility, patterns, and vapor pressure is available. The Pyrotector combines a high temperature flame ionization detector with a closely coupled teniperature programmable furnace to determine thermal decomposition rates as low as 0.001% per minute, according to the company. Applications of the system include research in thermal decomposition of organic compounds, vapor pressure studies of high boiling niaterials. detection of trace organic contaminants, and as a tool for the direct determination of vapor pressure curves of organic compounds. Carle Instruments, Inc. 71
