** Τ Μ DOW CORN1NO FOOD PROCESSORS — Now permissible to use time and money saving silicone defoamers: Antifoam AF Emulsion at con· centrerions up to 34 ppm; Antifoam A at concentrations up to 10 ppm.

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Dow Corning Corporation Midland, Mich., Dept .2808

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EQUIPMENT

Flowmeter calibrations are controlled from these instrument panels installed in Fischer & Porter's recently dedicated Colburn Memorial Laboratory

Reading the Rotameters N e w laboratory for studying fluid flow and cali­brating meters dedicated to Allan P. Colburn

(CALIBR ATION OF FLOWMETERS meas­uring hazardous or volatile fluids is the primary purpose of the new Allan P. Colburn Memorial Flow Laboratory, recently dedicated by Fischer & Porter at Hatboro, Pa. Engineered through­out for safety, accuracy, and flexibility, the laboratory is one of the most com­pletely equipped hydraulic test facilities in this country.

Dedicated in memory of one of the pioneers in fluid engineering research, the laboratory can conduct calibrations on both production and research bases for virtually all types of fluid systems, from pure liquids to slurries. Fa­culties are also provided for studying rheology, flow, and viscosity character­istics of fluid systems.

At present, there are two dual cali­bration units, based on the standpipe-weighstand principle, with provisions for a third such unit to be added a t a later date. Volumetric displacement type calibration stands, as well as ana­lytical instruments for testing of fluid properties, are also available in the laboratory.

The calibration stands provide a range of flow rates from 100 lb. per hr.

to 125,000 lb . per hr . of l iquid hydro­carbon. With additional pumping ca­pacity, each stand can be expanded to handle a maximum flow rate of 300,-0O0 lb . per hr. Temperature and flow are automatically controlled, and timing is done electronically to the nearest 0.O01 second. Thus, the over-all meas­urement of flow is within 0 . 1 % of the true rate, according t o Fischer & Porter.

Each system contains a storage ca­pacity of 2000 gallons, a heat exchange loop, pumping facilities, master control panel, and standpipes for fluid weigh­ing. All tanks and piping are under­ground wherever practicable for maxi­mum safety. Pipelines are color coded. All electrical components are explosion-proof in hazardous areas and the main calibration rooms are continually purged to minimize the concentration of flammable, toxic, or explosive vapors. Additional protection is provided by a carbon dioxide spray system coupled with automatic power shutoff actuated b y a rapid temperature rise in the area.

Fischer & Porter says the n e w labora­tory will b e used primarily to provide calibration services for its range of flow-metering equipment. Ε 1

3 9 7 2 C&EN A U G . 13, 1956

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BIG INCH - LITTLE INCH You get automatic low-cost application

when you specify high-quality Polyken

HOW IS THIS POSSIBLE? Factory controlled pro­duction from controlled materials—the source of quality—is likewise the source of low-cost field application.

By transferring your coating production to our planty you get:

1. Polyken "Controlled Strength"—careful control in the selection and mass processing of raw materials to assure you "all work—no waste' ';

2. Uniform composition, thickness and adhesion;

3. Application right from the roll—little handling, no heat, no thinners, no solvents, no drying, no cooling, no cleanup time required;

4. High-speed, low-labor power taping for "big inch" as well as "little inch" installations;

5. Lowest equipment investment and manpower costs.

We can't figure your costs here in dollars and cents. But show us your plans—and we suspect you'll be surprised at how little this method costs you.

Lets talk it over now, Write* wire or phone today. The Kendall Company, Polyken Sales Division, Department CE-H, 309 W. Jackson Blvd., Chicago 6, Illinois (Randolph 6-U250).

Complete catalog, Sweet's Industrial Construction File, Sec. ff

PROTECTIVE COATINGS T H E K E N D A L L C O . . P O L Y K E N S A L E S D I V I S I O N

A U G . 13, 195 6 C & E N 3 9 7 3

A caliper survey was made to detect^corrosion of oil-well tubing."Erratic "blips" on the survey chart indicate corrosion in well using ordinary inhibitor. Parts of two corroded tubes are shown at right·

Evenly spaced "blips" in this chart show no corrosion, merely indicate tubing joints in well using inhibitor containing Sunaptic acid. The tubes look like new. Both surveys taken after one year.

Sunaptic Acid's king-size molecules give twice the efficiency of fatty, rosin,

synthetic, or ordinary naphthenic acids USED IN CORROSION INHIBITORS, A SUNAPTIC ACID CUTS COSTS . . . GIVES GREATER PROTECTION TO OIL WELLS

In the above oil-well tests, the substitution of high-molecular-weight Sunaptic® acid for fatty, rosin, synthetic or ordinary naphthenic acids doubled the efficiency of the corrosion inhibitor.

The reason: the king-size molecules of Sun Oil Com­pany's Sunaptic acid. Characteristic features of a typical molecular structure are: one carboxyl group per molecule, three saturated rings, and ring sub-stituents of methyl, ethyl, or other aliphatic groups.

Sunaptic acids have other unusual properties: no olefinic unsaturation, high resistance to oxidative rancidity, low freezing or pour points, and a higher hydrocarbon solubility than fatty, rosin, and ordi­nary naphthenic acids.

INDUSTRIAL PRODUCTS DEPARTMENT

Typical applications of Sunaptic acid derivatives in­clude anti-oxidants, oil-soluble detergents, lubricant additives, plasticizers. A switch to a Sunaptic acid can possibly improve any product you're now mak­ing with fatty, rosin, synthetic, or ordinary naph­thenic acids. For fuUinfonna t ion on Sunap t ic acids and t h e i r uses , see you r Sun represen ta t ive , o r w r i t e S U N O I L C O M P A N Y , Ph i l a . 3 , Pa. , Dept. C N - 8 .

FREE TECHNICAL BULLETINS O N OTHER SUNOCO PETROCHEMICALS Benzene, Toluene, Mixed Xylenes * Propylene Tetramer * Pro­pylene Trimer · PDO-40 (polymerized drying oil) * Sulfonate WS (water-soluble sulfonate) * Sulfur * Anhydrous Ammonia

©SUN OIL CO.

SUN OIL COMPANY PHILA. 3, PA. imccLV« I N CANADA; SUN OIL COMPANY LIMITED, TORONTO AND MONTREAL

E Q U I P M E N T

• Scanning spectrometer, said to sur­pass conventional instruments in both dispersion and resolution, is now being produced by Jarrell-Ash. The unit has a first order reciprocal linear dispersion of 16 A./mm. at the exit slit, with a minimum resolution of 0.2 Α., accord­ing to Jarrell-Ash. Ε 2 • Pirani vacuum g a g e gives direct, continuous pressure readings from 1 to 2000 microns of mercury, according to its maker, Consolidated Electrody­namics. The instrument measures on two scales the total pressure of conden­sable vapors and permanent gases in a vacuum system, with one scale reading from 0 to 2000 microns and the other scale reading from 0 to 50 microns.

E 3 • Chromatography apparatus de­signed for analysis of gases, liquefied gases, and liquids, by adsorption as well as by gas-liquid partition tech­niques, is now available from Halli-kainen Instruments. The unit features a wide temperature range of from 0° to 275° C , high sensitivity, continuous integration, plug-in column panels, and precise flow control. Ε 4

• Bagging scale, designed to handle all dry feeds, including grains, crumbles, pellets, cubes, and dusty materials, will sack 25-, 50-, and 100-lb. bags at rates up to 15 bags per minute, according to Richardson Scale, maker of the unit. The scale is power-driven and belt-fed.

E 5 • Coppus engineering has acquired from the McRae Corp. exclusive manu­facturing and sales rights to the Sentry Valve. These valves are of the auto­matic quick-closing latch type and the quick-opening piston type. Ε 6 • No. 23 drain or sampling valve is now available from Jerguson Gage & Valve in standard pipe sizes from 3 / 4 in. to 2 in. The valve, designed for severe operating conditions of tempera­ture and pressure, is said to be ideal for installations where it is desirable to have the valve seat inside the wall of the vessel to prevent liquid from re­maining in the nipple and valve. Ε 7 • Pump and vaporizer, developed by Superior Air Products, is designed to pump oxygen, nitrogen, or argon from a liquid state at low temperature and pressure to a gas at any desired pres­sure up to 5000 p.s.i. The pump is available in capacities from 250 to 30,-000 cu. ft. per hr. and can be oper­ated from a liquid storage tank or di­rectly connected to a liquéfier. E 8

• Survey meter, featuring transistor­ized high voltage power supply, meas­ures beta and gamma radiation on three

scale ranges of 0.2, 2.0, and 20 mr. per hr», equivalent to 800, 8000, and 80,-000 counts per minute. The meter, made by N R D Instrument, weighs only about 5 lb. E ^

r Explosive igniters aimed at simpli­fying electrical initiation systems and the wiring of electrical leads through complex pressure seals are now offered by McCormick Selph Associates. In general, the squib is constructed inte­grally, although in larger igniters there are provisions for a threaded-in squib.

E I O

• Electronically controlled proportion­ing system which records formulas and weighings on a summary punch card is now available from Richardson Scale. The system is said to permit the user to process billings, maintain inventory con­

trol, and keep records of weighing amd proportioning by processing tlwe punched cards. i l l

• Portable, high vacuum pumping unît, by New York Air Brake, is de­signed to attain absolute pressures «acs low as 10"^ mm. of mercury by means of a fractionating, 4-inch diffusion pump connected to a 15 cu. ft. per min., two-stage roughing and backing me­chanical vacuum pump. The unit is intended for general laboratory work,

(Continued on page 3985)

Ί Further useful information on keyed Equipment mentioned is readily available . · .

Use handy coupon on page 3976 ^

August 13, 1 9 5 é

Use this h a n d y self mailer to obtain further informat ion or l i terature.

Simply mark, clip coupon, fold, and mail

Every week C&EN's editors survey a large volume of valuable scien­tific, technical, and business information issued in the form of product announcements, booklets, catalogs, d a t a sheets, etc. This material is digested and presented in several departments. For your conven­ience this coupon is provided to fadl i tate requests for further informa­tion on these items as well as on products and services mentioned in advertisements.

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SCHWARZKOPF M1CROAN ALYTICAL LABORATORY

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EQUIPMENT (Continued from page 3975)

pilot plant operations, and small scale production applications. Ε 12

• Electric pipet dryer, by Scientific Products, is designed to accommodate pipets up to 375 mm. in length and dry them thoroughly in a minimum of time. The base is vented to ensure con­tinuous flow of air through the drying chamber. Ε 13

• Electromagnetic flowmeters, by Nu­clear Corp. of America, measure by converting liquid velocity directly into an electric potential with no inherent pressure drop. The instrument is said to be adaptable to measurement of flow rates as low as 100 cc. per min. and as high as 2000 gal. per min. for corrosive liquids, radioactive solutions, slurries, and other fluids. Ε 14

ί Bronze gate valves with cylindrical body construction for longer leakproof life are now in production by Kennedy Valve Mfg. The valves, in sizes from V 4 in. through 3 in., are available in screwed, solder joint, and brazing socket ends. Ε 15

• Packless solenoid valve , by Magna-trol, is said not to require back pressure for efficient operation. The valve, which features a removable operating assembly, will control the flow of water, brine, oil, solvents, and gases at tem­peratures up to 212° F., according to Magnatrol. Ε 16

^Gasketing material, a high pressure sheet stock laminate of plies of inter­locked synthetic fiber felt impregnated with Teflon resin, is said to combine the thermal and chemical properties of Teflon with low flow characteristics.

The material is available from American Felt. Ε 17 • Liquid level g a g e , by Liquidvision Gage & Control, measures the height of liquid in closed containers by pressure differential. The gage was developed especially for measurement of the height of liquefied gases, but is appli­cable to other measurements where pressure differential is to be determined, according to the company. Ε 18 • Indicating temperature controller, b y Fenwal, has every major controller element, such as switching and indi­cating mechanism, switch type, bulb diameter, capillary length, and ma­terials of construction, available in at least several variations or ratings to permit the user to tailor the control to the application. Ε 19 • Adherent protective coating for con­crete, metals, and wood, said to be re­sistant to concentrated hydrochloric acid, 17% sulfuric acid, nitric acid, brine, caustic solutions, oils, and fuels, has been developed by Churchill Chemical. The coating, consisting of two parts mixed just prior to applica­tion, is cured at room temperature. Ε 20

• Lubrication testing machine has been developed by Alpha Molykote for test­ing bonded coatings and liquid lubri­cants. The instrument indicates fric-tional forces throughout the test and automatically shuts itself off at a pre­determined coefficient of friction. Ε 21

MANAGEMENT (Continued from page 3880)

graduate mechanical engineer. As an illustration of the diversity of interests represented in the student body, "graduates" of the school include the personnel director for the organic divi­

sion and the assistant to the division's controller.

At the end of each day, a quiz is given the students by Shattuck. Nei­ther the quiz nor any other part of the course is graded. Shattuck goes over the quiz at the end of each day and be­gins the next session with a review of the preceding day's information ex­change. He comments or expands on past discussions as the occasion de­mands, pointing out weak spots in the class without engaging in personalities.

Francis J. Curtis, Monsanto's vice president for personnel, hopes to send a number of other people to the school. Hammer, too, hopes eventually to send all sales personnel through the program, if only for a refresher. "After 10 to 15 years out of school," he says, "people can readily get out of touch with cur­rent production problems and relation­ships/*

How about cost of the chemical col­lege? It's a justified added sales ex­pense, says the company. And it is certainly not as costly as (nor as time-consuming) as night courses in college chemistry. Persons who have com­pleted the session are extremely enthu­siastic about the program. In addition to the information obtained from Shat­tuck—who also adds a lot of anecdotal color to his discussions—the different students contribute a lot of their own specialized knowledge to the session with resulting benefits to everyone in attendance.

To date, the college of chemical knowledge has concerned itself only with the organic division. Since each division at Monsanto is autonomous, a program or policy instituted by one is not necessarily followed by the other divisions. However, other divisions of the company are observing the "College of Chemcial Knowledge" as a pilot plant test in communications, and may institute similar programs of their own in the future.

A U G . 13, 195 6 C & E N 3 9 8 5

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