Pyrethrin I and II: Their estimation in pyrethrum (<i>Chrysanthemum cinerariaefolium</i>). II

Name: Work Video:
Duration: 3 min 30 s
Description: 1. The acid method previously described has been used to evaluate samples of pyrethrum derived from both Swiss and Japanese seed, with equally successful results. 2. A rapid method for the evaluation of pyrethrum by a determination of pyrethrin I is described.
F. Tattersfield; R. P. Hobson
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