G - Physics – 01 – N
Patent
G - Physics
01
N
150/26
G01N 33/02 (2006.01) G01N 31/22 (2006.01) G01N 33/12 (2006.01)
Patent
CA 1182731
ABSTRACT OF THE DISCLOSURE A method is provided herein whereby by using gentian violet as a substance, the concentration of one or more selected components or factors of a complete animal feedstuff may be monitored throughout the life of the feed whether at the mill, in transit or at the place of its end use. In one embodiment, the method includes the following steps: (a) dispersing gentian violet on a finely-divided carrier, the carrier particles being of approximately the same size as those of the selected components; (b) admix- ing thoroughly an amount of gentian violet-bearing carrier to the selected animal feedstuff component to label the component; (c) admixing said labeled component in said animal feedstuff to form a complete animal feed- stuff, the quantity of gentian violet being sufficient to provide upon complete mixture, a known concentration in the resultant animal feedstuff in the range from 3 to 16 parts per million; (d) selecting a sample of the resultant animal feedstuff and placing it in a container; (e) adding a sufficient amount of a solvent for gentian violet to cover the sample; (f) agitating the immersed sample sufficiently to extract the gentian violet from the sample; (g) separating the gentian violet and solvent from the solid portion of the sample; and (h) comparing visually the color of the gentian violet solution of step (g) to a suitable standard for the known concentration to ascertain the concentration of gentian violet in the sample, whereby the concentration of the selected component in the resultant feed- stuff may be measured concomitantly at the situs of the resultant animal feedstuff.
406969
Borden Ladner Gervais Llp
Cambridge Products Ltd.
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