Abstract
THE British Drug Houses have recently brought out a new type of soil-testing outfit for determination of pH. values, in which barium sulphate is used as a clarifying agent. This enables the determination to be made with a greater degree of precision than has hitherto been possible, particularly in the case of clay soils. The outfit has been designedin response to a persistent demand for means of estimating pH. values conveniently and accurately in the field, and isfitted up in a compact oak cabinet of readily portable form. The cost of the complete outfit is £1 Is., and prices are also quoted in the descriptive pamphlet (issued by British Drug Houses) for the individual items, should need arise for their replacement.
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Determination of Hydrogen Ion Concentration of Soils. Nature 137, 698 (1936). https://doi.org/10.1038/137698a0
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DOI: https://doi.org/10.1038/137698a0