TORSION BALANCE COMPANY

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Precision weighing the better way! with the All American Balance...

The Torbal Friction Free Torsion Band Balance for accuracy, speed, convenience and reliability.

Select a TORBAL" precision balance for virtually any purpose, and save a great deal of time and expense when you do it. With TORBAL’s low maintenance balances, you’ll also save money with years of trouble free performance. All TORBAL balances feature rugged torsion-band suspension making them far more reliable and durable than knife-edge balances. With torsion band fulcra there are no knife edges, no metal to-metal wear, and no bearings to accumulate dust or dirt. And the weighing mechanism is not affected by corrosion or abrasive dusts in the atmosphere either.

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TORBAL Principle WUIL

IN0iCAIO«

The fundamental parts of the EA-1 weighing mechanism are shown below. Instead of the pointer and fixed index as used in a conventional balance, the EA-1 uses a sensor called an E-core. The E-core, through an amplifier, senses the rotation of the beam and produces a meter deflection proportional to this deflection. All the weighing operations on the EA-1 are performed to return the meter needle to the original point of

equilibrium

or zero.

TORBAL Model EA-1 Shown is the TORBAL EA-1 analytical balance with electronic speed and the highest standards of accuracy, operating ease and retained

sensitivity.

Capacity: 160 g Precision: 0.03 mg 8-10 g dial-in-tare, extend-

ed tare range to 208 grams.

TORBAL

THE TORSION BALANCE COMPANY 125 ELLSWORTH STREET, CLIFTON, N.J. 07012 (201) 473-6900

CIRCLE 210 ON READER SERVICE CARD

ANALYTICAL CHEMISTRY, VOL. 53, NO. 14, DECEMBER 1981

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1637 A