Unsurpassed ^Λ Accuracy for pH and mV ^Measurements
The Model pHM 4 an All-New
pH meter developed for research applications
• Transistorized
RADIOMETER
• Potentiometric W e are exceptionally proud of Radiometers latest achievement — a transistorized pH meter which in cludes these outstanding attributes: •
by
If your requirements are exceptionally d e m a n d i n g , do not f a i l to evaluate the Radiometer p H M 4 . By all means write for further information.
V e r y low zero drift.
•
Accuracy for pH differences to ±
•
Accuracy 0.05%.
for
mV
measurements
0.001 pH. ±
0.2
mV
±
•
Reads direct in pH (0 to 14) or mV (0 to ±
•
Uses w i d e variety of plug-in or remote electrodes.
1500).
•
Built-in battery condition test a n d standard cell.
•
Uses only two types of readily obtainable 1.5 volt dry cells.
•
W i d e buffer adjustment r a n g e .
•
Small v i e w field for minimum eye travel.
•
Controls conveniently located.
HIGH READABILITY Effective scale length over 140", or 10" per pH.
J 9524 SOLD AND SERVICED IN U.S.A. BY
WELWYN INTERNATIONAL INC. 3355
Ed gee lift Terrace
CLEVELAND In
11, OHIO
RADIOMETER 72 Emdrupvej
C O P E N H A G E N , DENMARK
C ο η α d α : Contact any Branch of Canadian Laboratory Supplies Limited
Circle No. 104 on Readers' Service Card VOL. 3 1 , NO. 6, JUNE 1959
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65 A
