National Instrument Laboratories, Inc

With utility box & vertical rods. • 20-240 excursions per minute ... 6 on Readers' Service Card. THE N.I.L. 10-CHANNEL ... PHONE: 933-1144. AREA COD...
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Power unit w i t h platform

With utility box carrier

. 20.240 ™ , „ . * · .

Eberbach

With utility box & vertical rods

SMALL TABLE TOP RECIPROCATING SHAKER

• Minimum space required—14" χ 12" χ 9%" high

CORPORATION

With platform & tiering posts

P.O.

This exceptionally wide speed range readily adapts this Shaker to low speed motion studies, as well as violent agitation. Stroke can be adjusted to y2", 1" or V/Î'. 115 volt, 50/60 cycle. Shaker Power Unit with platform, Catalog No. 5850 $195.00 Write for Bulletin No. 750

Box 1 0 2 4 Ann Arbor, Mich. 4 8 1 0 6

Circle No. 6 on Readers' Service Card

THE N.I.L. 1Ο-CHANNEL FLOW PUMP A NEW CONTINUOUS-FLOW PERISTALTIC PUMP FOR COLUMN CHROMATOGRAPHYUNMATCHED FOR DURABILITY, USE IN COLD ROOMS, HEAD-PRESSURE CAPACITY, AND FREEDOM FROM TUBING WEAR.



Flow rate infinitely variable from less than 0 . 0 5 m l / m i n to 5 0 0 m l / m i n .



Conformai geometry of tubing support elimi­ nates local stresses, minimizes pulsing, and avoids tubing wear.



Delivery volume controlled by varying tubing diameter a n d motor control.



Accommodates tubing up to % " I.D.



Can pump against 6 0 - f o o t head pressure.

National Instrument Laboratories, Inc. NIL

12300 Parklawn Drive, Rockville, Maryland

20852

In Metropolitan Washington, D. C. PHONE: 933-1144

AREA CODE: 301

Circle No. 187 on Readers' Service Card

132 A



ANALYTICAL CHEMISTRY

Bulletin 5-2800