measure

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CAMBRIDGE GAS ANALYZERS Labor saving—profit

made to measure

producing!

Every item in the Diamond D Blue Line will measure with maxi­ mum accuracy and uniformity. The graduations are calibrated with ex­ treme care and the etching is deep and clear to afford maximum read­ ability.

Cambridge Gas Analyzers con­ tinuously analyze and simultane­ ously record on one chart from one to six constituents of a gas. They may be used for most simple and many complex mixtures of gases. Dependable and laborsaving, these Analyzers make pos­ sible increased efficiency and savings in the operation of steam generating plants, cement kilns, blast furances; in the production of inert gases; in metallurgy, in petroleum refining and other chemical processes. 3-POINT RECORDING GAS ANALYZERS (Co?, H2, CO)

Send for literature m e n t i o n i n g application

The pigment in the Diamond D Blue Line is heat-fused into the graduations and is impervious to practically every chemical. The Diamond D Blue Line is annealed in electrically-con­ trolled lehrs to relieve internal strain and each piece is double tested to rigid standards. When you need laboratory glassware with built-in accuracy and uni­ formity, specify the Diamond D Blue Line. Send for FREE brochure today.

DOERR

CAMBRIDGE INSTRUMENT COMPANY INC.

GLASS COMPANY

3 5 1 4 G r a n d Central Terminal, N e w York 1 7 , Ν . Υ .

VINELAND, N. J .

PIONEER MANUFACTURERS OF PRECISION INSTRUMENTS Circle No. 65 A-2 on Readers' Service Card, page 73 A

Circle No. 65 A-1 on Readers' Service Card, page 73 A

Eberbach POWER-STIR WITH ELECTRIC GOVERNOR Maintains

Speed

In Spite

Of

Line Voltage Or Load Variations New Eberbach POWER-STIR is a high-torque, variable speed stirrer designed for intermittent medium duty. It features an electric governor that maintains desired speed despite line voltage fluctuations or load variations. Important f e a ­ ture, too, is the Eberbach exclusive hollow spindle. This de­ vice holds and centers metal, glass or plastic stirring rods and provides variable working length of the agitator. No. 7 7 - 8 3 6 D Power-Stir with 2 5 - 6 0 cycle A C is $ 5 0 . 0 0 .

Governor,

115

volt,

ADVANTAGES • • • •

MAINTAINED SPEED HOLLOW SPINDLE 200 to 1000 R.P.M. EXTRA HIGH TORQUE Request Bulletin 600

Eberbach "Hollow

Eberbach

describing

Spindle"

SCIENTIFIC INSTRUMENTS &APPPARATUS

CORPORATION

ANN ARBOR, MICH.

Stirrers.

t S T M U S M D 1*4»

For further information, circle number ES A-3 on Readers' Service Card, paje 73 A V O L U M E

2 8, N O . 1 0 , O C T O B E R

1956

63 A