NEW LITERATURE
Spectrophotometer. Brochure explains all available accessories for Model 180 Infrared Spectrophotometer. Includes explanations of microsample handling techniques and explains each accessory's capabilities. Includes an optical schematic of each and lists all available versions of the accessories by code number. 168 Perkin-Elmer Corp. Solid waste. New 12-page full-color brochure describes broad line of solid waste collection vehicles for residential, commercial, and industrial pickup. The complete line of solid waste systems also includes stationary compactors, detachable and roll-off container systems, transfer trailers, pulverizers, and transfer 169 stations. The Heil Co. Compactor. Catalog sheet spotlights Tubar Trashbasher compactor with a patented end gate feature that double rams refuse at 99,000 Ib force. The illustrations and complete specifications-dimensional data, capacity and force data, hydraulic system data, electrical data, and mechanical data-provide details on operation of the unit which compresses many difficult large mass objects that ordinary compactors cannot handle. Tubar Waste Systems, Div. of Uhrd170 en, Inc. Treatment plant. Bulletin contains information on the economics of installing a concrete Rib-Wall interim waste water treatment plant. Notes typical installations of the treatments plants which offer capacities from 3500 to 40,000 gpd, and 94% plus BOD removal with the extended aeration system. Answers questions commonly asked in relation to installation time, service policy, advantages, and the economics of owning one. Marolf, Inc. 171 Blower. Bulletin M357 presents complete application, performance. and installation information on the new Model M357 belt-driven multistage blower. Unit is well suited to a wide range of applications, including drawing vacuum on tape transfer buffer columns, cooling capstan and reel driven motors, air sampling, fume collection, combustion air, and document hold-down. Rotron, l n c . 1 7 2 860
Environmental Science & Technology
Infiltration. Leaflet describes sealing leaking sewage joints internally with televisual inspection and internal pressure chemical grouting. Video 186 Pipe Grouting, Inc. Air pollution. Booklet covers company's gaseous source sampling service. Among services described and illustrated are sampling and analysis of stacks, roof monitors and vents; sampling of ambient air at various distances and directions from pollution sources: and preparation of detailed reports for submission to regulatory agencies. Nalco Chemical Co. 187 Acoustics products. Catalog includes a selection of acoustics products including five sound level meters. Describes noise measuring kits consisting of a noise level meter, acoustic coupler calibrator, windscreen, screwdriver, extra batteries, and a molded carrying case. Also contains photographs and brief description of each of the devices. Pulsar Instru188 ments, Inc. Air sampler. Brochure describes complete line of high-volume highsampling equipment utilized throughout government and industry. Also covers accessory equipment including filter holder, filter paper cartridges, transformers, timers, and programmers. Described in detail the "Brushless Hi-Vol," the newest addition to the line that provides continuous maintenance free sampling. Lists application and dimensional information. General Metal Works, Inc. 189 Survey. Publication covers survey of instruments and techniques helpful for monitoring water and air pollution. Articles focus on packaged laboratories for water and waste water analysis, "how-to" information on automatic EPA titrations, a report on the instruments and services geared for specific environmental applications, and a direct-reading spectrometer that analyzes for more than 20 metals simultaneously. Fisher Scientific co. 190 Disintegrator. Literature covers a flexible replacement disintegrator for waste water collection systems that is hydraulically powered from a remote power pack and submersible. Illustrates and describes how a high-
ly abrasive rotor grinds sewage solids
to small particles, thereby permitting more economical pumps and circulatory equipment. BIF SaniTrol, a Unit of General Signal 191 Environmental impact. New booklet, "Assessing Environmental Impact," offered as a methodical guide for managing the volume of necessary data required in the preparation of environmental impact statements, reports and drafts under federal and California law. Environmental Research & Counsel 192 Sewage bulletin. Technical publication describes the new Neverclog sewage ejector which is a self-contained pumping station which collects sewage from apartments, office buildings, factories, hospitals, shopping centers, schools, and all kinds of public buildings. WEMCO, Div. of 193 Envirotech Corp. Liners. Booklet details the physical and general properties of the broadest range of lining materials on the market. Includes test data on supported and unsupported Polyliner, Hydroliner, Dri-Liner, and three formulations of Vinaliner. Goodyear Tire 194 and Rubber Co. Pump bulletin. Fifteen different models of pumps for abrasive slurries, pulpy wastes, and other liquid-solid mixtures are detailed in new bulletin. Described are many horizontal, vertical, and vertical cantilever pumps. Discussion of the closed loop slurry test laboratory notes how to determine friction losses, critical carrying velocities, and general behavior of slurries in advance. Morris Pump, Inc. 195 Gages. Bulletin describes porcelain enameled iron staff gages used to provide quick visual reading of water level in open channels. Covers characterists and style for the gages. 196 Leupold & Stevens, Inc. Analysis. Bulletin, "Chemistry of Metal Surfaces," describes passivation and corrosion analyses of metal surfaces using electron spestroscopy. Contains application data and explains how rates of oxidation are determined by using Model 650 Electron Spectrometer. Also discussed is the ability to observe the top few atomic layers to readily monitor changes in layer thickness. Du Pont c o. 197
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