Soil pH or soil reaction is an indication of the acidity or alkalinity of soil and is measured in pH units. Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale ...
"Enlarged edition of our 'A.B.C. of hydrogen ion control.'"--Foreword. "A discussion of the meaning of hydrogen ion concentration and pH values in simple language, by W.A. Taylor and F.R. McCrumb." ...
At head of title : LaMotte pioneers and leaders in the development and production of materials and equipment for the ... "Prices effective March 1st, 1936." ...
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