COOL DOWN to -20C
ca
FLASH COMBUSTION The NEW KR 30 Refrigeration Unit makes ANY circulator into a low-temperature circulator for only $250.00 Connected to a H a a k e C i r c u l a t o r , t e m p e r a t u r e is pulled down t o —10° C in less than 30 minutes. Controlled temperatures down to — 20° C are achieved by using the control features of the circulator connected to this unit. Control to ±0.01° C is achieved when used with a Haake Circulator. Portable and compact, the KR 30 incorporates a %A H.P. Tecumseh compressor. The Freon 12 refrigerant is circulated through an in ternal heat exchanger, through which the liquid to be cooled is pumped. Any circulator can be easily connected using suitable lengths of rubber hose. For additional information, write for Bulletin 37.
PoIyScience Corporation INTEMNATIONAL DIVISION
909 PITNER AVENUE
EVANSTON, ILLINOIS 60202
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ABLATION STUDIES •
FLUORESCENT EMISSION • These are a few of the many applications for the
Model 5 0 1
Circle No. 190 on Readers' Service Card
* Patent Pending
Rapid Scanning Spectrometer
When little things mean a lot
Scans 30A/i/sec. with Excellent Stability & Resolution; Covers Broad Wavelength Region in One Scan. • S p e c t r a l e n e r g y d i s t r i b u t i o n of f l a s h b u l b f r o m 3 0 0 0 A t o 6300A. F o u r c o n secutive 1 msec scans . . . 5 msec. total elapsed time.
Because they mean a lot to you, they mean a lot to us. That's why S/ P maintains 16 distribution centers, offers more than 30,000 items. For example — disposable, color-coded diSPo Pipets for micro sampling—calibrated to contain to ± 1 % . We guarantee you'll enjoy using them. They can mean a lot in your laboratory. No. P4518X-diSPo® Micro Pipets
scientific products
Capacity, ml.
GENERAL OFFICES: 1 2 1 0 LEON PLACE EVANSTON, I L L I N O I S
0.01 (10λ) 0.02 (20λ) 0.025 (25λ) 0.05 (50λ) 0.1 (ΙΟΟλ)
0.005 (5λ)
Package of 26B
6 pkgs., pkg.
$14.40 (5φ each)
$12.30 (4.3Φ each)
Write for Bulletin 10866 or
Call (212) 461-4200 THE WARNER & SWASEY CO. CONTROL INSTRUMENT DIVISION 32-16 Downing Street · Flushing, New York 11354
Send for your free copy of the S/P 1967 Glassware Catalog.
98 A
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Circle No. 94 on Readers' Service Card ANALYTICAL CHEMISTRY
Circle No. 178 on Readers' Service Card
