PUMP
LIQUIDS, GASES OR SOLIDS IN SOLUTION
NEW from PHOENIX
THROUGH FLEXIBLE TUBING
WITH FINGER PRESSURE OR KINETIC CLAMP
HANDBOOK
FINGER PUMP Wave like motion of steel fingers moves materia! through tubing. Capacities .005 ml, min to 4.5 GPM. Sigmarmotor finger pumps provide the flexibility of handling up to 4 tubes at a time. Tubing size can be varied for proportioning, metering or mixing.
KINETIC CLAMP
LIQUID CHROMATOGRAPHY HANDBOOK
Clamping pressure moving in a circular pattern forces material through a single tube. Kinetic Clamp Pumps are smaller and light weight. Capacities 1.5ml/day to 12 liters/hr.
This 110 page pocket size ring-binder handbook from the Phoenix Precision Instrument Co. describes and illustrates some of the most widely used automatic equipment in the field of ion exchange chromatography as applied to amino acid and nucleic acid analyses. HANDBOOK INCLUDES: • Applications • Principles of Operation • Sample Preparations • Actual Chromatograms and their Inter' pretations • Special Section on Instrument Maintenance and Trouble Shooting. Write for your free copy on your letterhead to:
PPI
NO CORROSION · NO CONTAMINATION Both types of Pumps are available in varicible or fixed flow.
PHOENIX
PRECISION
INSTRUMENT CO.
A Subsidiary of CENCO \ Instruments
WRITE FOR CATALOG
Corp.
3803-05 North Fifth Street, Phila., Penna., 19140, U.S.A.
SIGMAMOTOR, INC.
World Wide Sales & Service
47 NORTH MAIN ST., MIDDLEPORT, Ν. Υ. 14105 Circle No. 8li on Readers' Service Card
See ACS Laboratory Guide for All Products/Sales Office
^x
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NOW THERE ARE TWO HELLER LAB STIRRERS
SetfStickwgTIME TAPES & LABELS (we make them)
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You can use them in . . . • OVENS · STERILIZERS • AUTOCLAVES • INCUBATORS • WATER BATHS • OIL BATHS • DEEP FREEZERS • REFRIGERATORS
TIME
Write for complete i n f o r m a t i o n about © o u r full line of L a b o r a t o r y 77Ί T a p e s a n d L a b e l s 1
LABELS
PROFESSIONAL TAPE COMPANY, INC. 363 East Burlington Rood, Riverside, ill. 60546
The Famous GT21 1/40-HP (shown here) at $99 The All-New 6T60 1/20-HP at $156 •Nearly 25,000 Heller GT21 adjustable speed lab stirrers have been sold. The new Heller 6T60 stirrer offers the GT21's abilities in a powerful 1/20-HP version. Heller solid-state, printed-circuit con trollers provide adjustable speed with automatic correction for changing viscosity and line voltage variation; operate on 115-volt 50-60 cycle A.C. Speeds: GT21 — 0-6000 RPM using armature shaft, 0-333 RPM using gear shaft; 6T60 — 0-4000 RPM with arm ature shaft, 0-400 RPM with gear shaft. Prices of both include bracket for mounting on lab stand, 3-jaw chuck and paddle, and, with the GT21, 3-step pulley and propeller. Write for Bulletin 639. Available through leading lab supply dealers
G. K. HELLER CORP.
Box 4426 · Las Vegas, Nev. 89106 GKH 249-06 Jericho Turnpike · Bellerose, N.Y. 11426
Circle No. 81 on Readers' Service Card Circle No. 139 on Readers' Service Card
VOL. 39, NO. 4 , APRIL 1967
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161 A
