The conductivity apparatus is a display of ten panels of diodes which light up from left to right with increasing degrees of conductivity of the solutions, and is very effective in the lecture setting ...

Managing plant nutrition based on substrate EC is better than fertilizer solution EC as substrate EC directly measures the amount of nutrients in the root zone. There are both in-house and laboratory ...

DR. DAVIES's book, the first edition of which was reviewed in NATURE of September 20, 1930, p. 429, under the title “Strong and Weak Electrolytes”, has been revised, and enlarged by about eighty pages ...

THE theory of reversible ionisation, advanced by Arrhenius in 1887, owed its widespread acceptance to the fallacy that the degree of dissociation of a salt can be calculated independently from the ...