Dynamic Capacitor Electrometer

You can measure accurately

Β^ΜΜΠ amp =

16

IP" amp

FEATURES

A micro-microammeter and millivoltmcter in one instrument · Measures currents from 10-1*to10-* amperes · 10, 100, and 1,000 mv ranges plus recorder output · Exclusive, diaphragm-type dynamic capacitor provides longer life, greater stability and reliability · High stability, both short and long term · Extremely high input im­ pedance—1015 ohms · Better than 2% accuracy • $1,075.00 F.O.B. Carlstadt, N. J. TYPICAL APPLICATIONS Electronics:

Measurement of semi-conductor parameters, lowlevel voltages, static charges, floating grid po­ tentials, grid currents, residual noise in summing amplifiers, and insulation resistance

with the

**Βο*$ΓΓ% let's get a

CURTISS -WRIGHT

D O W CORNING SILICONE DEFOAMER!" The most effective defoamers ever developed, just Ί teaspoonful kills foam in— 1 2 , 5 0 0 gallons sodium bromide solution

Physics and Chemistry:

Dynamic Capacitor Electrometer

Mass spectrometry, pH measurements Nuclear:

Reactor control and radiation monitoring systems Industrial:

Beta and gamma gauge control systems Biophysics and Medicine:

Measurement of stomach acidity, skin and cell potentials,

Electronic Component & Instrument Sales Department

ELECTRONICS DIVISION

CURTISS-WRIGHT CORPORATION

5 , 0 0 0 gallons vat dye solution

• «RISTADT, N. J.

For further information, circle number 117 4-2 on Readers' Service Card, page 115 A

2 , 5 0 0 gallons starch sizing 1 , 2 5 0 gallons black liquor You can reduce processing time, increase output from present equip­ ment and lower production costs with a Dow Corning Silicone Defoamer.

Improve process control with controlled

CLAYS

Try n e w A N T I F O A M Β Stops f o a m i n g of even the most violent and stubborn foamers quickly a n d economically w i t h a minimum of fuss. M a n y chemical processing plants are standardiz­ ing on this new, more stable and e a s i e r - t o - u s e silicone defoamer. Test A n t i f o a m Β in your plant a n d see h o w it saves t i m e , space a n d MONEY!

H y d rite Kaolinites a n d o t h e r G K K a o l i n Clays a r e available in a w i d e variety of controlled particle sizes and shapes. This enables the user to obtain various properties from materials having identical chemical charac­ teristics. If you need a l o w cost, insoluble, surface active powder of high purity, a Hydrite Kaolinite may answer your purpose. A m o n g the many materials in which they are used are: adhesives ceramics ink insecticides

leather paint paper petroleum

pharmaceuticals plastics protective coatings rubber

textiles

For FREE SAMPLE of Antifoam Β and full information, address

We offer you experienced research and technical service in the solution of problems relating to new and modified applications of kaolin clays. Many important developments have resulted from this type of cooperation

Dept. 6417 first in silicones

DOW CORNING CORPORATION MIDLAND,

GEORGIA KAOLIN COMPANY 433 North Broad Street, Elizabeth 3, N e w Jersey

MICHIGAN

Circle Να. i n A-1 an Readers' Service Card, page 115 λ

For farther information, circle number 117 A3 on Readers' Service Card, page IIS A

V O L . 4 9 , NO. 5 ·

M A Y 1957

117 A