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A Simple Freeze-Drying Apparatus for Preserving Plant Materials Treated with Insecticides1

Published online by Cambridge University Press:  31 May 2012

S. McDonald  and
N. W. Hall
S. McDonald
Affiliation:
Canada Agriculture Research Station, Lethbridge, Alberta
N. W. Hall
Affiliation:
Canada Agriculture Research Station, Lethbridge, Alberta
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Extract

Freeze-drying equipment at this station capable of handling bulk quantities of fresh plant material was designed as a single unit and was therefore unsatisfactory for use with plant materials having insecticide residues because decontamination was difficult and quantitative recovery of the condensate after each run was almost impossible. The condensate may contain a considerable portion of the insecticide and contamination could influence assay results. To overcome these problems a simple apparatus, modified after the Cole-Palmer bulk freeze-dryer (Cole-Palmer Instrument and Equipment Company, Chicago, Illinois), was constructed from readily available materials with a minimum of machine-shop labor.

Type
Articles
Information
The Canadian Entomologist , Volume 92 , Issue 3 , March 1960 , pp. 182 - 183
Copyright
Copyright © Entomological Society of Canada 1960

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References

1 Contribution from the Entomology Section.