Commonwealth Scientific and Industrial Research Organisation

Fluid Dynamics Pty Ltd.

Henry J Banks

Colin Joseph Waterford

Ren Yonglin

Keith A Norris

Francis James Michael Desmarchelier

Robert J Symons

Robert C Whitlock

John R Wiseman

The gaseous chemical compound, carbonyl sulphide, has hitherto been unknown as a fumigant for the control of insects and mites. Experiments have shown conclusively that carbonyl sulphide can be used as such a fumigant, with fumigation properties comparable to those of phosphine and methyl bromide. The effectiveness of carbonyl sulphide against insects (both adult and immature stages), mites, termites and moulds is demonstrated. In addition, its low absorbtion by grain, lower flammability than phosphine, lack of influence on seed germination, and apparent environmental safety make carbonyl sulphide particularly beneficial as a fumigant of stored grain. It may also be used to fumigate other stored produce (including perishable foodstuff), soil, timber and spaces (such as buildings) and any material likely to be infested by insects or mites, or act as a source of such infestation.

Carbonyl sulphide insecticide

Method and apparatus for generating phosphine

Controlled atmosphere generating equipment

Metabolic processes within particulate durable foodstuffs (for example, grains) which have been stored in storage bunkers produce moisture. To prevent, arrest and/or reduce the accumulation of such moisture, vents are provided at the top and at the side of a storage bunker. Each vent is a pipe. The top-venting pipe is mounted substantially vertically and is provided with a rain shield. The side-venting pipe is closed with a cap which has a perforated or mesh-covered region to permit the ingress of air. The venting arrangement interrupts the normal convection cycle in the stored foodstuff mass and removes moisture-carrying air from the bunker.

Prevention, arresting and removal of accumulation of moisture in bunker

Growing community of inventors

Pialligo, Australia

Henry J Banks