NEW PRODUCTS
SADTLER
N-I-R
HIGHEST QUALITY UNIFORM PURITY
CORCO
SPECTRA identify 2,000
compounds Sadtler Near Infrared Reference Spectra speed and simplify identi fication of unknown compounds for the spectroscopist. At least three curves are supplied for each compound, one for each cell thick ness or concentration scanned— may be used for qualitative or quantitative measurement. All spectra are completely labeled as to name, structural and molecular formulas, molecular weight, melt ing and boiling points, cell thick ness, method of preparation and the instrument used.
Differential colorimeter for quick and accurate measurements of color trans mission and reflectance, has a filter assembly included designed t o meas ure metamerism in colored material. Also featured is a push-button zero counter which quickly rebalances the instrument. Manufacturers Engineer ing and Equipment Corp., 2 5 0 Titus Ave., Warrington, Pa. 426
Electron M i c r o s c o p e The EM-75C, recommended for teaching and general use, has variable electron acceleration up to 75 kv. Magnification is continuously variable between 1200 and 12,000 diameters on viewing screen. Resolving power is better than 30 A. Optional accessories include plate camera and attachments for reflection diffraction and projection microscopy. Micro x-ray source and selectable targets can be used for micro scopic examinations of opaque ma terials. Outstanding feature is the air-cooled vacuum pump which allows the use of the instrument after 15-20 minutes pump-down time from cold start, 10-15 min. after changing filament or camera, and 20-30 seconds after specimen change. Philips Electronic Instru ments, 750 South Fulton Ave., Mount Vernon, Ν. Υ. 427
REAGENT ACIDS NITRIC ACID SULFURIC ACID HYDROCHLORIC ACID ACETIC ACID, GLACIAL AMMONIUM HYDROXIDE HYDROFLUORIC ACID (ELECTRONIC GRADE) CAPS & LABELS COLOR-CODED FOR EASY IDENTIFICATION
Collection includes special NIR alphabetical and numerical in dices. Additional indices available as required. Reagent Solvents Meeting ACS Specifications
Write today for free N-I-R brochure including sample spectra.
QUALITY, PURITY...
NAME ADDRESS CITY
ZONE
STATE
SADTLER R e s e a r c h Laboratories, Inc. 1517 VINE STREET, PHILADELPHIA 2, PA.
Agents in principal countries of the world. Circle No. 91 on Readers' Service Card 126 A
•
ANALYTICAL CHEMISTRY
Transparent film-loop activates this 5channel laboratory programmer. Built-in features included: 5-channel capacity with up t o 2 0 0 events per channel, easily changed time base, flexible cycle time (one minute to six days), and ease of making program changes. Brochure available. Space Mechanisms, 6 3 9 Massachusetts Ave., Cambridge, Mass. 428
. . . the Best in Packaging and Superior Service are yours when you specify CORCO. For further information see Chemical Materials Catalog, or write to:
CORCO
CHEMICAL CORPORATION Manufacturers of Chemical Specialties B R I S T O L ,
P E N N S Y L V A N I A
Circle No. 43 on Readers' Service Card
