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(一)观察法 粉剂或可湿性粉剂,如果外表显现受潮特征,药粉呈团结块,或压一压呈现湿气重甚至结块者,表现药效已丧失。液体若静置后浑浊不清或有絮结沉淀,说明已失效变质。乳剂如果静置后出现油水分层或发生絮结及沉淀,也是失效变质的表现。 (二)加热法 把已生成沉淀的液剂或乳剂农药连瓶放进热水中,经一
(A) observation method powder or wettable powder, if the appearance of damp characteristics, powder was clumped, or pressure and pressure showed a heavy or even agglomeration of moisture, the performance has been lost. If the liquid after standing turbid or flocculation precipitate, indicating that the deterioration has deteriorated. If the emulsion after standing oil or water stratification or flocculation and precipitation, but also the performance of failure metamorphism. (B) heating method has been generated by the precipitation of liquid pesticide or emulsion bottle into the hot water, after a