BEL-ART
Manufacturers' Literature
Radioactive Scanning Systems.
Buy,
them
by the bag full ! POLYPROPYLENE AUTOCJLAJiOWLE Y and Τ CONNECTORS Twelvflijponnectors (one of each size*»* Λ.. J)NLY $6.50
POLYPROPYLENE STRAIGHT TUBING CONNECTORS
GC Polymer Column Packing.
POLYETHYLENE CUPTYPESTOPPERS Twelve MÉtoppers (one of each size) < ^ÉÉfiNLY3LJ i 15
No more delays . . . no more fumbling. Bel-Art's convenient way to insure your having a complete assortment of sizes available at all times.
Four
pages describe the use of polymer column packing with illustrative chromatogram and a bibliography of 29 items. Becker Delft N.V., Postbus 219, Delft, Holland 615 Laboratory Carts. A 3-page brochure describes the company's 21 laboratory carts. Labconco Corp., 8811 Prospect St., Kansas City, Mo. 64132 616
Gas
Chromatograph.
An
8-page brochure gives the complete details of the Model 9000 FID gas chromatograph. Illustrative analyses describe its use with barbituates, natural gas analysis, brandy distillates, long chain fatty acid esters, and blood alcohol. Carle Instruments, Inc., 1141 East Ash Ave., Fullerton, Calif. 29631 618 Weight and Mass Standards. Catalog No. W-100, 24 pages, gives basic information and over 50 photographs. It covers extensively screw knob, slotted, hook, one piece, grip handle, and special types in metric, avoirdupois, and apothecary systems. A special section deals with weight calibration, certification, adjustment, and refinishing of weights. Henry Troemner, Inc., 6825 Greenway Ave., Philadelphia, Pa. 19142 619
See your nearest laboratory supply dealer. listed in NEW 80 page catalog 469 For your FREE copy write Dept. A-10
BEL-ART PRODUCTS PEQUANNOCK, N. J., 07440 The M O S T COMPLETE l i n e of Plastic L a b o r a t o r y W a r e a v a i l a b l e f r o m O N E source
Circle No. 13 on Readers' Service Card
146 A
•
ANALYTICAL CHEMISTRY
XENON
Infrared Crystals. A two-page leaflet gives data needed to select IR transmission materials. Included are wavelength range, reaction to various samples, refractive index of crystals, and comparative cost. Barnes Engineering Co., 30 Commerce Rd., Stamford, Conn. 06902 617 Basic
~onnec' Twenty Connectors ( t w * * f each size) 1. "0NL%$5.25 Λ .
An
8-page bulletin is devoted to the Berthold radioactive scanning systems. Principles, applications, operation, capabilities, accessories, and literature references are given. Varian Aerograph, 2700 Mitchell Dr., Walnut Creek, Calif. 94598 614
Gel Permeation Chromatography.
A
22-page report, "The Influence of Gel Permeation Chromatography on Polymer Science and Technology," discusses the need for molecular weight distribution (MWD) measurements and the relative advantages and disadvantages of several current methods for determining MWD. Waters Associates, Inc., 61 Fountain St., Framingham, Mass. 01701 620
e X e n o n . W e h a v e it for y o u p u r e a n d ultra p u r e . In a v a r i e t y of pressures and containers. For this y e a r ' s c a t a l o g , write: Rare a n d S p e c i a l t y G a s e s Dept., A i r c o Industrial G a s e s , 150 E a s t 42nd Street. N e w York. N.Y. 10017.
AIRCO
Industrial Gases
Circle No. 2 on Readers' Service Card
