Almond residue tests

TABLE 20.14 Procedural Details for Hazelnut and Almond Residue Test Kits ... 

TABLE 20.12 Specifications of Commercial Almond and Hazelnut Residue Tests"... 

Atropine causes dilation of the pupil of the eye. A drop or two of an aqueous solution, containing 1 part in 130,000 parts of water, introduced into the eye of a cat is sufficient to produce this effect. When warmed with sulphuric acid and a small crystal of potassium dichromate, atropine develops a bitter almond odour. Evaporated to dryness on a water-bath with concentrated nitric acid, it gives a residue which becomes violet on adding a drop of sodium hydroxide solution in alcohol (Vitali s test). With a solution of mercuric chloride atropine gives a yellow to red precipitate of mercuric oxide. 

Tolerances for animal food commodities are required only if the pesticide is registered for use on crops that can be constituents of livestock or poultry diets. Allowable feed items are published in the USEPA s Residue Chemistry Test Guidelines (USEPA, 1996). Examples of crops not used for animal feed are strawberries, lettuce, grapes, and pecans. Examples of crops that can be included in livestock and poultry diets are wheat, com, citrus, apples, and almonds. 

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