FOB THE AREA UNDER M CURVE I I I ! Ml 111 MM 11III

Daystrom ATTEN-U-MATIC iniegrator Handles Signals from ι Millivolt to a Full volt Without Adjustment... The new Daystrom ATTEN-U-MATIC™ Integrator offers an

extended capabil i ty to the chromatographer or spectroscopist.

It automatically adjusts to changes in signal level through a

built-in attenuator and control unit. As a result, inputs from a

mill ivolt to a full volt are accepted and integrals computed

without need for adjustment. The read, reset, hold, and

integrate funct ions are carried out automatically, without the

presence of an operator, though they can also be

operated manually when desired.

The Daystrom ATTEN-U-MATIC™ Integrator is designed to

accompany the Daystrom Model 6708 two-pen crossover recorder

for instantaneous display of both chromatogram and integral, or

the Daystrom Model 6701 single-pen recorder for making both

graphic displays on a single trace (integral presented as bar

graph). "P ipp ing " pen used for ful l-scale count accumulat ion.

The Integrator is suppl ied with cabl ing and adapter kits for use

with other strip chart recorders as wel l . Further features of the

ATTEN-U-MATIC™ Integrator include sensitivity equivalent to

420,000 counts per minute, adjustable threshold sett ing,

and the capabil i ty for remote operat ion.

Send for details on this unique instrument!

DAYSTROM, I N C O R P O R A T E D

INDUSTRIAL INSTRUMENTS A R C H I B A L D , P E N N S Y L V A N I A

AT LAST! A PORTABLE VACUUM CARRIER

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1 2 8 A · ANALYTICAL CHEMISTRY

Just ONE of α COMPLETE LINE of PORTABLE SYSTEMS from PENN-CHEM including: • Portable Vacuum Assembly

Carr ier [Illustrated—Model V-2000 R)

• A l l Purpose Carriers • Portable Lab Racks • Portable Towers • Cantilever Carriers • Glassware Carriers

These hardworking carriers put virtually every laboratory operation ON WHEELS. VERSATILE? Sets up for scores of uses . . . • Vacuum Pumps & Accessories • Distillation Columns &

Accessories • Column Chromatographic

Equipment • Gas Analysis Apparatus • Reaction Set-ups • Filtration Equipment, etc.

For catalog and prices contact your laboratory supply dealer or wri te Dept. C-12.

232-238 Ν. MARSHALL STREET LANCASTER, PENNSYLVANIA

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P e n n - C h e m C o r p o r a t i o n