NEW FROM GENERAL ATOMIC
ULTRA-SENSITIVE TRACE ELEMENT DETERMINATIONS
one of 19 Labconco carts built for laboratory use only Labconco makes carts exclusively for use in t h e laboratory. T h i s specialization enables u s t o offer y o u a complete line of laboratory carts—19 models in all! Labconco carts aren't just "warmed over" restaurant or shopping carts. They're designed to meet t h e specific needs of the laboratory. All frames are smooth, welded units of one-inch, 18 gauge steel tubing (no rivets or bolts to work loose). T o assure lasting beauty, all steel parts are heavily plated a n d then coated with lacquer. On chemical a n d instrument carts, steel guard rails are rubber covered to prevent scratching. Non-metallic tops a n d shelves are m a d e of compressed asbestos, treated a n d polished to withstand acids, alkalies, a n d heat—won't crack or break. On glassware carts, removable wire baskets a r e dipped i n poly-vinyl to resist corrosion, prevent damage t o glassware. Labconco carts are priced from $35 to $106 ( F O B Kansas C i t y ) . Write for complete information today t o Labconco, 8815 S. Prospect Ave., Kansas City, Missouri.
LAB CON CO L A B O R A T O R Y CONSTRUCTION C O M P A N Y Circle No. 112 on Readers' Service Card 112 A
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ANALYTICAl CHEMISTRY
General Atomics AeiK.iiimi \ I U I \ M S Service oiler-, a rapid. >>eiisit,i\c. accur.ite and inoMViiMNL' method for determining trace elements in the parts per million and parts per billion range. Advantages include freedom from reagent contamination, small sample size, and in many cases, non-destruction of samples. Its simplicity can save time and money. Even at higher levels of concentration activation analysis is often the best method. A large and experienced staff of radiochemists performs activation analysis and related research. In activation analysis a sample is placed in one of General Atomic's TRIGA reactors and bombarded with neutrons, converting some elements in the sample to radioactive forms. T h e characteristic radiations emitted are then analyzed electronically for qualitative and quantitative determinations. Typical applications include analyzing petroleum hydrocarbons for vanadium, arsenic and chlorine; detecting pesticide residues, such as bromine and chlorine; and analyzing semiconductors for the traces of antimony, gold and other elements added in their manufacture. For information on a special Exploratory Study offer, write: Activation Analysis Service, Dept. 170, General Atomic, P.O. Box 608, San Diego 12, California.
GENERAL
DYNAMICS
GENERALATOMIC DIVISION Circle No. 104 on Readers' Service Card
