Physical properties of fluid fertilizers

Hgure 18.21. Spheric Apparatus for Measuiing Roundness of Granular Fertilizer. 

22 shows a typical pycnometer used for measuring density of fluids. 

Typical density values for some common fluid fertilizer grades are listed in Table 18.14 (solution fertilizers) and Table 18.15 (suspension fertilizers). 

Viscosity is the internal resistance to flow exhibited by a fluid. Viscosity is a useful measurement in evaluating the storage and handling characteristics of a fluid fertilizer, or as a quality control method in liquid or slurry 

Capillary for Volume Expansion Glass Pycnomaiar Stopper 

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Several other physical properties of fluid fertilizers are of importance for various reasons. Some of these physical properties are briefly discussed. 

Other physical properties of fluid fertilizers that may have some specific importance are vapor pressure, specific heat, wettability, surface tension, refractive index, and conductivity. 

Palgrave, D. A. 1984. Importance of Measuring Physical Properties in Fluid Fertilizers, Paper No. 203, 98th Meeting of AOAC International, Washington, D.C., U.S.A. 

Physical Properties. The physical form and stabiUty of a fertilizer product is of an importance almost equal to that of its chemical content. Commercial fertilizers of importance include not only soHds, but also fluids, both solutions and suspensions, and even a gas (anhydrous ammonia). 

Part II describes the application of clays in industry in different forms, with an emphasis on the substitution of metals with clays, e.g. ceramics etc. Exhaustive descriptions are given here for uses of clays and their derivatives in various industries, like the abrasive, insulators, drilling fluids, ceramics (modem and traditional uses), cements, fillers, plasters, surface coatings, fertilizers, batteries, soil conditioners, pigments, medicines and electronic equipments. The relation between the physical and chemical properties of clays and their industrial applications are explained as much as practicable. 

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