Manufacturers' Literature
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N E W SAFETY SPURT CAP* S a v e s clothes Prevents burns and injuries Sudden spurts of boiling chemical shooting out of a test tube will be rendered harmless by striking t h e S p u r t Cap mounted by a clip on any t e s t t u b e a n d shielding the open end of the tube with out sealing it. Cap b r e a k s up stream through inter nal baffle design. ^Canadian Patent Pending
NEW
DRYING TUBES
Electron Microscope. A 20-page bro chure traces the development history of the electron microscope. Picker Nu clear, 1275 Mamaroneck Ave., White Plains, N . Y . 10605 625
Graphite Materials and Products. An eight-page brochure describes graphite materials and products and lists prop erties and characteristics of a series of high-purity grades of graphite. Ultra Carbon Corp., 1310 N. Madison St., Bay City, Mich. 48706 626
Fittings are molded polyethylene with inner (male) standard taper joints with protruding end. Internal cross bars restrict passage of solid materials (may be cut out if not needed). Also useful in connecting standard taper apparatus. Available in 4 ", 6 "and 8 " lengths for 14/20 * and 2 4 / 4 0 f . See your nearest laboratory supply dealer. Send for NEW 80 page catalog 469 For your FREE copy write Dept. A-7
Ovens and Incubators. Forced circu lation and gravity ovens, vacuum ovens, and incubators are among the items included in Bulletin No. 320, 16 pages. Precision Scientific, 3737 W. Cortland St., Chicago, 111. 60647 628
Determination of Serotonin and Nor epinephrine. A six-page booklet pre sents a total system for the fluorescence assay of serotonin and norepinephrine. Regis Chemical Co., 1101 N. Franklin St., Chicago, 111. 60610 629
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
NS-5BO SIGNAL AVERAGING COMPUTER
• 5 " CRT Display • 10 Millivolt Input Sensitivity • Built-in Area Integration • Optional Search Ramp • Pre- and PostDelay Selections • Teletype Readin/Readout Option
;
$. 512 CHANNELS
4950
1024 CHANNELS 2048 CHANNELS
$5,450 $6,150
F.O.B. MIDDLETON, WISCONSIN
Spectrochemical Supplies. Pure ma terials, qualitative, semiquantitative, and quantitative standards, and preweighed diluents, buffers, and fluxing materials are included in a 25-page cat alog. Spex Industries, Inc., Box 798, Metiichen, N. J. 08840 630
Mass Flowmeters. Bulletin 506A ex plains the features and operation of the company's line of nonlinear mass flow meters. Technologv/Versatronics, Inc., 506 S. High St., Yellow Springs, Ohio 45387 631
BEL-ART PRODUCTS PEQUANNOCK, N . J. 0 7 4 4 0
from NORTHERN SCIENTIFIC
Research Enzymes and Biochemicals. More than 230 high-purity enzymes and related biochemicals for life science re searchers are listed in a 28-page cata log. Information such as enzyme source, activity, purity, assay, and packaging is included. Worthington Biochemical Corp., Freehold, N. J. 07728 627
with S T A N D A R D TAPER FITTINGS
NEW ÊWILm WW
Spectrophotometers. Models 111 and 116 second generation GC-IR spectro photometers are presented in Data Sheet No. 29, six pages. Wilks Scien tific Corp., South Norwalk, Conn. 06856 632
The NS-560 (SAC Series) Signal Averaging Computer provides the experimenter or technician with the most versatility, accuracy and efficiency at the lowest possible cost. It is a totaling type averager with a fixed program to provide a "non-rising" baseline. The unit has several optional features which extend its use in many medical applications as well as nuclear magnetic resonant measurements. If you have an experiment which has noise as a problem, or just digitizing analog signals, the NS-560 may solve your problem. For full details, write today.
NORTHERN
S C I E N T I F I C / I N C .
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P.O. Box 66, Middleton, Wisconsin 53562 Phone 608/836-6511 TWX 910-280-2521 Circle No. 98 on Readers' Service Card
Circle No. 90 on Readers' Service Card
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