Abstract
I HAVE devised an inexpensive grading temperature apparatus (or ‘multiple incubator’), especially for a range of below-room-temperatures, for example, + 7°, + 13°, + 17.5° C., which otherwise would require three different refrigerators with thermo-regulation. This is based on the ‘Brueckenthermostat’ of Zwoelfer1, and although much simpler, gives excellent results.
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Zwoelfer, Z. Angew. Ent., 19, 497 (1932).
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VAN HEERDT, P. A Small Grading Temperature Apparatus for Entomological Use. Nature 165, 323 (1950). https://doi.org/10.1038/165323a0
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DOI: https://doi.org/10.1038/165323a0
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