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对存放时间长或商标脱落的农药要经检验后方能施用,以免造成损失。现介绍如下五种检验法:1.灼烧法用于粉剂农药。取5克左右粉剂,放在金属上灼烧,如冒出白烟,说明没有失效。2.兑水法用于高湿性粉剂农药和乳剂农药。取50克左右的药剂,放在玻璃瓶里,用肥皂水调成糊状,再加一定的清水,沉降的速度很慢,放置半小时后瓶底没有沉淀或沉淀很少,说明没有失效。
Pesticides that have been stored for a long time or have been taken away from the trademark can only be applied after being tested to avoid losses. Now introduce the following five test methods: 1. Burning method for powder pesticides. Take about 5 grams of powder, on the metal burning, such as white smoke, indicating no failure. 2. Duishui law for high humidity powder pesticides and emulsion pesticides. Take about 50 grams of pharmaceutical, on the glass, with soapy water into a paste, plus a certain amount of water, settling speed is very slow, after half an hour there is no sedimentation or sedimentation of the bottom of the bottle, indicating no failure.