NEW PRODUCTS
NOW WE ARE
3 from BEL-ART PRODUCTS Polyethylene
FLY ANESTHETIZE!* Low c o s t . . . resistant to ether f u m e s . Durable and fast acting it fits on the cap seat of a stand ard half pint milk bottle and may be modified to fit practically any con tainer in which flies are kept. Ideal for research laboratories and student use.
TEFLON* L I N E D BEAKER Stainless steel. Handy spout facilitates pouring of liquids. Teflon lining makes cleaning easy... even of the most vis cous materials. Avail able in 8 sizes. •Teflon, ® D u Pont Co.;
from TECHNILAB INSTRUMENTS, INC. ELAPSED TIME METERS Easily read elapsed time in dicator insures accuracy in tim i n g laboratory procedures. Available in two models reading to 9999.9 seconds in 1/10 seconds or to 999,99 minutes in 1/100 minutes. See your nearest laboratory supply dealer.
3 catalogs now available. For your FREE copies write Dept. A-12
BEL-ART PRODUCTS PEQUANNOCK, N. J. 07440 Circle No, 87 on Readers' Service Card
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MAC 16 is a 16 bit parallel word computer featuring a two μ,-sec add time and a 4096 word core memory, expandable to 65K words. The basic system includes a programmed data channel servicing up to 255 devices with • four true nested priority inter rupt levels, which automatically store the machine state upon interrupt and which can be expanded to a total of 64. The standard MAC 16 repertoire in cludes 86 instructions with multiply and divide available as options. Lock heed Electronics Co., Data Products Division, 6201 E. Randolph St., Los Angeles, Calif. 90022 421
The latest techniques in digital cir cuitry and a comprehensive range of modules, which enable rapid conversion to cover ac, dc, cathode ray, and cyclic voltammetry, are employed. The basic instrument, of modular construction, consists of a power supply, a digi tal electronic generator, a current am plifier with a sensitivity range of 20 nanoamps up to 10 milliamps full scale, and an output module. Sweep rates range from 0.25 mV/sec to 120 V/sec. Electronic Instruments Ltd., Cam bridge Instrument Group, Lower Mortland Rd., Richmond, Surrey, England 422 P e r i s t a l t i c Pump A three-channel pump has been de signed for chromatography column pumping. Features include adjustable flow rate, adjustable pressure control and lock on tubing, stainless steel rol lers, and zero-max speed control to vary flow rates u p to 60 m l / h o u r and 250 m l / h o u r depending on tubing diameter. The pump is convertible to six channels. Ted Pella Co., P . O. Box 606, Altadena, Calif. 91001 423 Flexible T L C Sheet
Baker-Flex T L C sheets can be charred without burning, permit the use of normal visualization techniques, and give increased resolution and better definition than other flexible sheets be cause of a thick adsorbent layer that permits loading of two to eight times more sample. They have a solvent substrate, are rugged, abrasion resist ant, easy to cut and can be written upon. Two sizes with 18 different adsorbents, including fluorescents, are available. J. T. Baker Chemical Co., Phillipsburg, N . J. 08865 424
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Multiple Application Computer
Polarograph
from APPLIED COATINGS, INC.
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WHAT'S IN IT FOR YOU? GAS CHROMATOGRAPHY Supports S t a t i o n a r y Phases Packings Equipment T H I N LAYER CHROMATOGRAPHY Adsorbents Equipment H I G H PURITY LIPIDS Fatty A c i d s a n d Esters M o n o - , Di-, a n d Triglycerides Phospholipids C A L I B R A T I O N STANDARDS S t a n d a r d Lipid Mixtures Kits o f Pure S t a n d a r d s Pesticides Hydrocarbons RADIOCHEMICALS A m i n o Acids Lipids REAGENTS Silyl Esterification There's s o m e t h i n g f o r e v e r y o n e in t h e n e w 1 9 6 9 A p p l i e d Science C a t a l o g . W r i t e f o r y o u r FREE copy of Catalog #12 today.
Applied Science Laboratories Inc. P. O. Box 440 · State College Pa. 16801 » Tel.: 814-238-2406 Circle No. 83 on Readers' Service Cari See ACS laboratory Guide for All Products/Sales Office
VOL 40, NO. 14, DECEMBER 1968 ·
105 A
