MANUFACTURERS' LITERATURE
Gas Chromatograph. A 4-page bro chure describes the Model 154L Vapor Fractometer. In addition to specifica tions, several chromatograms are used to illustrate the instrument's capabili ties. Perkin-Elmer Corp., Norwalk, Conn. 622 Laboratory Equipment. A new cata log includes specialized laboratory glassware, distillation columns, molec ular stills, analytical and preparative gas chromatographs, refractive index monitors, and other items manufac tured for organic and analytical chem ists. Nester/Faust, 2401 Ogletown Rd., Newark, Del. 623 High Purity Materials. A 124-page catalog lists pure metals, inorganic high purity chemicals, single crystals, stable isotopes, phosphors, luminescent and photoconductive chemicals, rare earths, scintillations chemicals, and other prod ucts. Purities of these materials range up to 99.9999%. Electronic Space Products, Inc., P. 0. Box 18795, Los Angeles IS, Calif. 624 Mossbauer Effect. A 4-page brochure describes Mossbauer effect materials in cluding sources fabricated from Co 57 , Sn 119m , and I 1 2 3 . All of the sources, absorbers, standards, and isotopes of fered are available with detailed speci fications. New England Nuclear Corp., 575 Albany St., Boston 18, Mass. 625
Plastic Labware. A 24-page catalog illustrates, describes, and prices dis posable and plastic laboratory items. A chart is included which lists some of the significant properties of various polymeric materials used in labware. Scientific Products, 1210 Leon Place, Evanston, 111. 60201. 626 Potentiometer Catalog. Catalog P1210, 64 pages, describes the com pany's complete line of Dynamaster electronic recording and controlling po tentiometer and bridge instruments. The Bristol Co., Waterbury 20, Conn. 627
Testing Instruments. A 1964 catalog lists instruments for the measurement, recording, and control of viscosity, con sistency, plasticity, How, moisture, grinding, mixing, and extensibility. C. \Y. Brabender Instruments, Inc., 50 East Weslev St., South Hackensack, Ν J. 628 Optical Crystals. Spectroscopists and other working with optical crystals, masers, and research crystals can ob tain a 50-page bulletin which covers new crystal data and useful informa tion on the application of these mate rials. Optovac, Inc., North Brookfield, Mass. 629
Sample and Hold Amplifier.
A 2-
NESCO
page sheet provides general and func tional descriptions, a block diagram, specifications, and applications infor mation on the Model SA3 operational amplifier. The unit is designed to fol low rapidly moving waveforms and then, on digital command, to hold the sampled value accurately for relatively long periods. Adage, Inc., 292 Main St., Cambridge 42, Mass. 630
RECORDER
Company Periodicals
MEASURES
Requests for copies of the following publications, catalogs, etc., should be sent directly to the address shown. Business or professional letterheads are requested. Labitems. Vol. 13, No. 1. This 16page issue announces the company's changeover to IBM data processing for customer service. Various laboratory supply items are described, illustrated, and priced. Greiner Scientific Corp., 22 North Moore St., New York 13, Ν. Υ.
GRAPHIC:.
1/100TH OF A
MILLIVOLT. Pen speed 1/2 sec. full scale
Gas Pipe. No. 6. This 16-page issue consists of a "Stationary Phase Guide." The guide is arranged according to classes of compounds of interest and includes references. Also, a low-cost column conditioner is described. Jarrell-Ash Co., 26 Farwell St., Newtonville, Mass. 02160. Gelman Solutions. Vol. I l l , No. 1. This 14-page issue describes the com pany's electrophoresis equipment and supplies. Emphasis is given new sup porting materials: Metricel, Sepraphore III, and Versapor. Gelman In strument Co., P. O. Box 1448, Ann Arbor, Mich. 48106. The Laboratory. Vol. 32, No. 1. This 32-page issue features some interesting historical references to centrifugation. The issue also contains articles on new models of the Dilumat, Carl Zeiss spec trophotometers, new reagents, and other laboratory equipment. Fisher Scientific Co., 7111 Forbes Ave., Pitts burgh, Pa. 15219. The Givaudanian. The January is sue of this publication contains an in teresting article on the effect of storage in polyethylene containers on the com position of gasoline and oils. Chro matographic analysis shows that some of the more volatile components are lost. Givaudan-Delawanna, Inc., 321 West 44th St., New York, Ν. Υ. 10036.
MODEL JY-120 Here is fast, accurate potentiometric recording at a low price —only $535.00. Both accuracy and sensitivity are Vi% of span. Maximum signal source resistance, 50K ohms. Step selection of ranges - from 1 MV to 10 V, provided by attenuator on front panel. Minimum zero drift - due to null-balance, servotype, potentiometric, chopper-stabilized system. 2 other ranges available: 10 MV fixed span, Model JY100 $375.00
lOMVto 100 V, Model JY110
$420.00
10" models available: 10 MV fixed span, Model JY150
$565.00
10 MV - 100 V, Model JY160
$595.00
1 MV - 10 V, Model JY170 $690.00 for gas chromatography with Disc integrator from $1150.00
NESCO INSTRUMENTS DIVISION 509
OF
HINDRY
DATAPULSE,
AVE,
INGLEWOOD
INCORPORATED 1,
CALIFORNIA
OR 8 - 3 9 8 3 / TWX: 2 1 3 - 6 7 3 - 0 3 9 0
Circle No. 1SO on Readers' Service Card
VOL. 36, NO. 4, APRIL 1964
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