UNITHERM HAAKE CONSTANT TEMPERATURE CIRCULATOR
USE AND DISPOSE!
NEW PRODUCTS determination of the low-angle forward transmittance of translucent specimens. Gardner Laboratory, Inc. P-51 Stainless Steel Fixtures. New Type #316 stainless steel laboratory service fixtures include rigid gooseneck for deck mounting, turret and panel flanges with straight serrated tips, and straight stops with wheel handles and color coded indexes. Τ & S Brass and Bronze Works, Inc. P-52
FISHER REAGENTS
in DISPOS-IT 0 NO REUIRN
bottles and cases
High Vacuum Pump. Series 240 UlteVac general purpose unit has 40-liter per second capacity; operates on coldcathode discharge in magnetic field, has no moving parts ; claimed ultimate vac uum, ΙΟ-9 mm. Hg. Ultek Corp. P-53 Recording Spectrofluorimeter. In strument provides for independent scanning of excitation monochromator or fluorescence monochromator; also provides for recording a spectrum of one as a function of the other. Unicam Instruments, Ltd. P-54 Electron
Multiplier
Photometer.
Model previously available only with a battery power supply now can be equipped for line operation; comes either with galvanometer or microammeter. Farrand Optical Co. P-55
5 PINT BOTTLES packed 6 to a case
Line Spectra Source. Gas discharge tube emits hydrogen-deuterium Balmer lines, permits comparisons of hydrogen lines with deuterium lines for student atomic physics experiments; input, 75 watts. Robert K. Hassler Co. P-56
OR
Power Supply. Model 351A rack mounted unit is adjustable in 1-micro ampere steps, said to give regulation better than 0.01% with outputs of 0 to 100 ma. at 100 volts maximum. John Fluke Manufacturing Co. P-57 Lens Tissue. Silicone treated paper is available in self-dispensing, disposable box. Silicone Paper Co. of America. P-58
FEATURING: • A c c u r a c y t o ± 0 . 0 1 °C •
Range 0-1S0°C
•
P u m p s t o 5 GPM
• Magnetic Temperature Setting • Automatic "water level" s h u t off device • Separate c o n t r o l u n i t protected from fumes • Additional heater m a y be c o n n e c t e d •
Cooling coil
• Suitable for open tank o r closed c i r c u i t p u m p i n g .
Ultrasonic Cleaner. Model 160 de livers 500 watts average, 2000 watts peak; actual radiating surface, 96 sq. in.; capacity, 13 gallons. National Ul trasonic Corp. P-59 Mechanical Convected Oven. Unit has temperature range from 35° to 350° C ; features through-wall port holes for insertion of thermocouples and other devices; has dial temperature in dicator-controller. Electric Hotpack Co. P-60
SEND FOR COMPLETE DESCRIPTIVE CATALOG
BRINKMANN Brinkmann Instruments, Inc., Cutter Mill Road, Great Neck, L. t., Ν. Υ. Circle No. 28 on Readers' Service Carl
102 A
·
ANALYT1CAI CHEMISTRY
Strip Chart Recorder. Unit has 6 nonoverlapping, rectilinear channels ; sensitivity, 1 ma. full scale; response time, 1 sec; chart speeds, 1 / 2 in. per
A l l with dripless sleeves The ultimate in packaging and handling convenience and safety is yours when you buy reagents from Fisher. Shipped in tough ICC-approved corrugated cases, these highpurity Fisher reagents are available in 1-pint, 12-to-a-case units and 5-pint, 6-to-a-case units . . . all with safety "dripless" pouring sleeves . . . all at no deposit... all in dispos able glass containers. (Even nitric acid is now available in 5-pint, 6-to-a-case units in a special lightweight wood Dispos-it!) • glacial acetic acid
· sulfuric acid
• hydrochloric acid
· ammonium hydroxide
_
U-6SO.
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