. ..unconditionally to t a k e the quibble out of pH measurements. W i t h exclusive IL DELTA-matic® control Models 13 5-A and 145 p H / m V Electrometers let you expand any one p H Unit or any 100 m V full scale. Both instruments extend readings over an effective 88 inch meter face on the expanded scale. Y o u get the answers you need the first time — simply, accurately, fast. A special IL slope control permits the user to quickly change the actual o u t p u t of any IL p H electrode to the theoretical outp u t without affecting the accuracy and normal operation of the system. An operator can calibrate a DELTA-matic® p H / m V electrometer at p H 7 on the expanded scale and read unknowns at p H 4 ± 0 . 0 0 3 p H . Then repeat the answer within 0.001 p H again and again. For economy and general laboratory use the LAB-omatic® Model 165 will handle a variety of IL glass electrodes and can be used for p H titration, oxidation reduction and Karl Fischer Titration. W i t h three ranges; 0-14 p H ; 0-1400 m V and 0-700 m V the Model 165 has a 7.2 inch mirrored scale readable to .02 p H and repeatable within ± 0 . 0 1 p H . Learn the facts. Get a personal demonstration w i t h n o obligation. Contact: your nearest IL authorized dealer* — he is the p H expert in your area, or write for a free copy of IL p H literature.
MODEL 145
MODEL 165
PIONEERING NEW DEVELOPMENTS IN pH METERS, ELECTRODES, AND SYSTEMS Distributed
in the U.S. by Aloe Scientific and Scientific
INSTRUMENTATION 9 GALEN STREET ·
WATERTOWN SQ. ·
Products.
LABORATORY
BOSTON 72, MASS. ·
TEL. (617) 926-1700 ·
INC. CABLE: ILINC
Circle No. 146 on Readers' Service Card
VOL. 36, NO. 12, NOVEMBER 1964
.
99 A
