POTENTIOGRAPH AUTOMATIC RECORDING TITRATOR We believe that the Metrohm Potentiograph is not only the most versa tile, but also the most accurate recording titrator. A demonstration or trial can be arranged in your labora tory—without obligation, of course. We invite direct comparison of per formance to any other instrument available. The Potentiograph is the only record ing titrator which offers micro and macro burettes for capacities from 1 to 50 ml and single or dual titration assemblies. The stand is adjacent to the basic instrument so that acci dental spillage of corrosive materials cannot damage recorder and other components. Recording on single sheet or strip chart. PRICE $2560 complete WRITE FOR CATALOG PT 411
METROHM
METROHM
BRINKMANN INSTRUMENTS, INC. 115 Cutter Mill Road, Great Neck, Ν. Υ. PHILADELPHIA • CLEVELAND • HOUSTON · MIAMI MENLO PARK, CAL. · ST. LOUIS
Circle No. 31 on Readers' Service Card
INSTRUMENT & DEVELOPMENT PRODUCTS CO.
PLANCHETMASTER
P-312
355 W . 109th Place Chicago 2 8 , Illinois
dpd
• FULLY AUTOMATIC • INTEGRATED SYSTEM • COMPLETELY TRANSISTORIZED • COUNTS IN 2TT OR 4π MODES • WINDOW OR WINDOWLESS GAS FLOW • BUILT IN PRINTING TIMER
NEW AUTOMATIC SAMPLE CHANGING SYSTEM
• ACCEPTS 4π SHIELDING
SALES OFFICES MIDWEST & EAST Charles Walsh Asso. P. O. Box 244, Deerfield, III. ID 3-2800 173 Lake Ave., Greenwich, Conn. TO 9-1015 P. O. Box 541, Oak Ridge, Tenn. 482-2411
• ANTI-COINCIDENCE GUARD COUNTER & CIRCUITRY AVAILABLE
WESTERN STATES West Coast Scientific Sales & Service Co. 376-60th St., Oakland, Calif. OL 4-2662 11168 Santa Monica Blvd., Los Angeles, Calif. 478-4396
• ACCEPTS SCINTILLATION DETECTORS • BASIC SYSTEM UNDER $2,500
Circle No. 159 on Readers' Service Card
50 A
•
ANALYTICAL
CHEMISTRY
