EQUIPMENT

Dual Analyzer for Gas Streams Cascading detectors permit infrared ana lyzer to

make simultaneous analyses of two components

τ ISTON-BECKER has designed a dual in-•*-' frared analyzer that provides within a single unit continuous analysis for two components in a complex gas stream. The unit is a modification of company's standard model 21 plant stream infrared gas analyzer, and operating principles are basically the same.

Dual analysis is obtained in the modi­fied unit by cascading two detectors-each charged with its sensitizing gas. A single standard amplifier is employed and results are indicated on a multipoint recorder. Printing speeds as fast as 6 seconds may be employed. Independ­ent span and zero controls are pro­vided in an auxiliary control unit.

In the analyzer, the first detector cell has holes all the way through it per­mitting radiant energy to pass out of the windows in the bottom of first detector. Unabsorbed energy from the first de­tector is transmitted to a second de­tector which is charged with the second gas. For recording specific analyses for two different gases, a multipoint re­corder (print wheel type) with a switch to select the signal from either one or the other detectors is used.

Liston-Becker says the dual analyzers are currently being employed for the

Operator records CO and C02 measure­ments from multipoint recorder

simultaneous analyses of CO and CO2 in combustion studies. In typical analy­ses, ranges of 0 to 10% CO2 and 0 to 20% CO, are provided. An accuracy of 19£ of full scale is available in each range.

Cost and complexity of the dual analyzer is only slightly greater than single component instruments resulting in considerable savings in both first cost and in maintenance, says company. Ε 1

Monobed Resin Unit Changes Tap W a t e r to Distilled

Central Scientific has come up with a device for rapidly changing ordinary

tap water into the chemical equiva­lent of triple dis­tilled water ( in terms of specific resistance) for as little as 10 cents a gallon. Company says advantage of the device is that user can regulate the time of con­tact between resin and tap water until he obtains desired chemical equiva­lent of single or

triple distilled or even higher. The device is called the Quikpure

unit and is comprised of a 16 oz. poly­ethylene squeeze bottle, the bottom containing a mixture of cation and anion exchange resins. Tap water poured into the bottle comes into im­

mediate contact with the resins and is converted to distilled water in about one minute, company says.

The cap of the polyethylene bottle permits user to discharge distilled water from the squeeze bottle but will not allow resins to escape. Resins may be used repeatedly up to about 25 gal. of water depending upon its hardness. When the resins cease to react, a color change occurs caused by the presence of a registered food, drug, and cosmetic dye.

The monobed resin works by cations being exchanged for hydrogen ions while the anions are exchanged for the hydroxyl ions of the resin. Ε 2

Wide Range Distillation Unit Employs Adiabatic Column

Scientific Glass is manufacturing dis­tillation apparatus for laboratories and pilot plants that utilizes an adiabatic column. The column of the Dalin unit relies on differential thermocouples to establish heat input to the heating jacket. Construction of column is such that a wide variety of packed columns

can be accommodated by one set of jackets and can be interchanged within minutes, company says.

Scientific Glass claims that charges from 2 ml. to 72 liters are easily frac­tionated; also that standard columns can be supplied with boil-up rates as high as 30 l./hr., depending on diameter of column and packing. The distillation unit can be operated at temperatures up to 350° C.

Any available column packing can be supplied—including either metal or glass helices. Company guarantees that any size Dalin column will be properly packed with any type of helix and will also be delivered without any settling of the helices. Ε 3

• Microscope illuminator, developed by Reichert Optical Works, and avail­able through William J. Hacker & Co., permits advanced laboratory and re­search work with an ordinary standard microscope. Features of the illumi­nator, called Unilux, is a double lens collector and field iris diaphragm, con­venient filter slides, built-in centerable mirror, supplementary lens on sliding mount, and precentered low voltage light source. Ε 4 • High pressure valves, series 34, by Annin, are for pressures up to 6000 lb./sq. in. and temperatures up to 900° F . Also available is model 34 manually operated. Valves are fur­nished in sizes 1/2 in. and 3 / 4 in. Ε 5 • Small centrifugal pump, by Eco, is made of carpenter 20 stainless, for handling a wide variety of corrosive chemicals or for noncontaminating serv­ice in food, biological, and similar ap­plications. Maximum capacity is 30 g.p.m. Unit will pump against a head up to 24 lb. and has a maximum suc­tion lift of 20 in. vacuum. Rear suc­tion and discharge permit accessibility without disconnecting pump from line, and there is full visibility of fluid be­ing pumped through borosilicate front cover plate. Ε 6

• Exhaust fans, by Duriron, are said to have metal resistance to corrosive fumes and gases. Casing is of Duriron, and the rotor is a multiblade, forward, curved design of Durimet 20, a high nickel stainless steel. Durco Β series fans are available with capacities to 8000 c.f.m. Company says design and construction make them 40% lighter in weight than former Duriron fans. Ε 7

For further information on any Item mentioned here, see coupon

on page 1724

1720 C H E M I C A L A N D E N G I N E E R I N G N E W S

this is one fish story the fish will verify'

Here's dramatic proof of the unique ability of viSQUEEN film as a moisture barrier—able to keep moisture in, and able to keep it out at the same time!

Two goldfish lived a healthy, happy life for several weeks in a suspended VISQUEEN bag. I t was sealed tightly at the top and opened only for periodic feedings. VISQUEEN literally ' "breathes" so carbon dioxide produced by the fish passed out through the film—and oxygen came in from the outside. The fish were as perky the day they came out as the day they went in.

During the entire test not one drop of water leaked out!

If your product must retain moisture—or, if it must be kept absolutely dry, you can use VISQUEEN film to excellent advantage. Better see a VISQUEEN converter now.

IMPORTANT! V I S Q U E E N film is al! polyethylene, but not all polyethylene is V ISQUEEN. VISQUEEN is the only f i lm produced by process of U. S. Patent No. 2461975. Only V ISQUEEN has the benefit of research and techni­cal experience of The Visking Corporation, pioneers in the development of pure polyethylene f i lm.

ίβ/m m my e r e a

pUUM/ * film . . . a product of the •T. M. Th„ Vbklng Corporation V I S K I N G Ο Ο φ Ο Γ β ί ΐ Ο Π

World's largest producers of polyethylene sheeting and tubing

Plastics Division, Terre Haute, Indiana · In Canada: Visking

^ Z o n e - - . . S t a t (

Limited, Lindsay, Ontario · · · · · · · · · · € >

V O L U M E 3 2, N O . 1 7 A P R I L 2 6, 1 9 5 4 1721

VISQUEEN

EQUIPMENT.

• Monochromator , model H, by Cam­bridge Thermionic, incorporates five quartz sections and has a pass band width of 40 A. to 120 A. Five quartz sections vary in length from 4 in. to l / 4 in. Unit is equipped with a light source that is easily attached. Ε 8

• Potassium l abora to ry arc , by George Gates & Co., furnishes monochromatic radiation of potassium for polarimetry, interferometry, refractometry, and spec­trometry. Strong red line radiation can be obtained with 9 7 % of energy radiated in region of 7699 A. to 7765 A. Arc consists of two units: a lamp housing and an enclosed electrical auxiliary. Unit operates on a 110- to 120-volt, 60-cycIe a.c. line. Ε 9

• Stack g a s scrubber, liquid precipi­tating, by Johnson March, has been developed for instal1 tion in low cost housing of cinder _ jck, concrete, or fabricated steel. Housing for system can be built as a permanent installation or, if made of fabricated steel, as a portable unit. Connections to existing ducts need no complicated piping, company says, neither cloth bags nor filters are used. Ε 10

• Receiver- integrator , type 224, for graphite panels, has been designed by Foxboro, for use with company's line of Consotrol instruments. Integrator con­sists of two small, self-contained units; a remote counter and a flow receiver. In operation, pneumatic measurement signals ( 3 to 15 lb./sq. in.) from a flow

Hand Pump Accommodates Range O f Interchangeable Accessories Tokheim's 688 series high vacuum, hand pump is designed to accommodate a wide range of interchangeable accessories, such as discharge spout, hose and nozzle, bottle filler spout, drip pan, and meter and shut-off nozzle. Pump employs a universal out­let fitting to accommodate all accessory connections. Unit has a sliding pipe that can be extended from a minimum of 22 in. to a maximum of 40 in. so that pump is adaptable to either barrel, skid tank, or underground tank operation E l l

transmitter at the process are received by bellows which then position the cam switch mechanism. Cam switch, in turn, produces an electric impulse to actuate the counter. Ε 12

• Current t es t ing ins t rument with built-in multirange ammeter and pre­cision timer has been designed by Multi-Amp. T h e ammeter has a range of 0 to 1000 amperes; the electronically actuated timer consists of a synchro­nous motor driven electric stop timer with a thyratron controlled clutch ar­rangement. Timer can be furnished to totalize 60 sec. in 1/100's of 1 sec. or 60 min. in 1/100's of 1 min. E 13

• Recording osci l lograph, type 5-114, by Consolidated Engineering has eight traces added and 4 4 % additional data capacity is provided. The type 5-114 combines wide frequency-response range of Consolidate type 7-300 gal­vanometers with an 0.45 in. to 115 in. per sec. record-speed range. Ε 14

• Valves, submounted, crescent, de­signed by Barksdale, can be replaced in a mat ter of seconds, says company. Valve body can be removed and re­placed by a new one b y loosening three holding clamp bolts. Subbase remains undisturbed as a permanent part of the piping. Units are pilot-operated, sole­noid-controlled, 4-way valves 'for air, light oil, and water with pressures u p to 150 lb . /sq . in. Ε 15

• Pressure control ler , type 1440, by Black, Sivalls & Bryson, is designed to handle both positive and negative pres­sures from high vacuum to pressures up to 10,000 lb. Unit is Bourdon tube actuated with calibrated settings. Ver­nier settings are included. Ε 16

• Beta g a g e , called AccuRay, for measuring the thickness of coatings on base materials or thickness of sheets passing over a roll, has been designed by Industrial Nucleonics. Basic com­ponents of the unit are a source of radiation, a radiation detector, and a recording console. Variation in coating thickness causes variations in amount of radiation entering the detector. Variations are measured and expressed on the AccuRay recorder in terms of weight per unit area or thickness. Ε 17

• Pumps, a new V series designed by Vanton Pump and Equipment , incor­porates the use of unplasticized rigid polyvinyl chloride for the p u m p block. Capacities are from V 3 to 20 g.p.m. with pressures u p to 60 lb . / sq . in. and vacuum to 26 in. mercury. Ε 18

• Beta-gamma survey instrument, model AGB-10-SR (ionization t y p e ) ,

Agi ta tor Pumping Unit Keeps Solids in Suspension Grayniills pumping units are designed to handle liquids having a high abrasive con­tent such as pumice and other abrasives, mold coating compounds, adhesives, lac­quers, fluid printing inks, ceramics, and chemicals wnidi must he agitated as they are applied or recirculated. Pumps are available in container sizes ranging from 2 gal. to 40 gal. Ε 19

designed b y Jordan Electronic Mfg., will detect increments in radiation as small as 0.002 mr . /h r . above back­ground. Logari thmic response permits readings from O.01 m r . / h r . to 10,000 r . /h r . to b e covered in only three ranges. Accuracy is be t ter than 10% of reading at a l l levels. Control unit contains p r in ted circuits and mercury batteries for 3 5 0 hr . continuous use.

Ε 20

• Vapor r ecove ry unit , by Vernon Tool, prevents loss of vapors from volatile liquids during t h e loading of, tank cars a n d trucks. Known as Green-word unit, i t consists of a conical shape, lightweight aluminum housing, a Hykar rubber sealing r ing, a transparent plexi­glass cover, and connection for the vapor recovery hose. W h e n attached to the fill p ipe and placed in loading dome, Hykar r i ng provides a positive seal, thus preventing loss of vapors.

Ε 21

• Nonelectr ic p l a t e m a g n e t , by Eriez, is equ ipped w i th an alarm device. Alarm a n d magnet ic separator are dubbed Magnalarm by company. Ε 2 2

• Double magne t i c sh ie ld , by National Radiac, is designed for scintillation counting with photomultiplier tubes. Shield is constructed of two layers of hydrogen annealed Mu-metal . Model M-2 shield may be used with all 2-in. photomultiplier tubes having either flat or dome-shaped end windows. Ε 2 3

1722 C H E M I C A L A N D E N G I N E E R I N G N E W S