Imperial Chemical Industries Limited

Aeci Limited

Plaaskem (pty) Limited

John Hoy

Phillipus Jansen Van Rensburg

Phillipus J Van Rensburg

A method of making a dosage device comprises mixing a suspension concentrate comprising at least one active ingredient which is in solid form at 25&deg; C., and which has an average particle size of less than 10 microns, in a carrier liquid in which the active ingredient is non-soluble or sparingly soluble, and a drying agent for the carrier liquid. The drying agent takes up at least some of the carrier liquid of the suspension concentrate, thereby to dry the active ingredient at least partly and to obtain a mixture comprising the active ingredient and the drying agent. The mixture is compressed into at least one unitary dosage device.

Dosage device

A method of making a dosage device is provided including the steps: admixing at least one active ingredient which is a pesticide in solid form at 25.degree. C., is sparingly soluble in water, and has an average particle size of less than 5 microns, with a disintegrating agent, to provide a compressible mix; and compressing the compressible mix into a unitary dosage device capable of disintegrating in water to form a suspension of the active ingredient of a particle size less than about 5 microns in the water.

Active ingredient dosage device

A method of making a dosage device comprises admixing at least one active ingredient which is in solid form at 25.degree. C. and which has an average particle size of less than 5 microns, with a disintegrating agent, to provide a compressible mix; and compressing the mix into a unitary dosage device.

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Rivonia, South Africa

John Hoy