...one pH meter has less than 0.01 pH drift per 24 hours!
It is an expanded scale instrument which can be used for direct reading measurements from either 0 to 14 pH or over any span of 2.8 pH. Maximum accuracy is 0.01 pH. Line-operated. Delivery from stock. For complete information on quality pH Meters, unique combination electrodes and a list of stocking distributors near you, please contact:
METROHM
BRINKMANN INSTRUMENTS, INC. Cantiague Road Westbury, L. I., N.Y. 11590 ST. LOUIS · CHICAGO · HOUSTON · CLEVELAND PHILADELPHIA · SAN FRANCISCO
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Circ!» No. 13 on Readers' Service Card
GLASS ABSORPTION CELLS OF FINE MADE BY
Klett-Summerson Photoelectric Colorimeters Colorimeters - Nephelometers - Fluorimeters Bio-Colorimeters - Comparators - Glass Stand ards - Glass Cell - Klett Reagents
KLETT
Circle No. 55 on Readers' Service Card
100 A
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ANALYTICAL CHEMISTRY
QUALITY
KLETT
MANUFACTURING C O . , I N C . 179 E A S T 8 7 T H S T R E E T NEW YORK Ν. Υ.
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