McDougall K W, Lewis I J
Aust Vet J. 1984 May;61(5):137-40. doi: 10.1111/j.1751-0813.1984.tb07216.x.
The settling rates of 0.025% w/v amitraz (used as a 50% w/w active ingredient wettable powder) and lime stabiliser (0.7% Ca(OH)2) were studied in cattle dipping baths in the Tick Quarantine Area of northern New South Wales. Although lime settled more rapidly than amitraz, the rate for both decreased as the number of cattle dipped increased. After a total of 1,200 head had been dipped the settling rate during the hour following stirring was negligible, and re-stirring was not necessary within the hour following use. Baths could also be cleaned of heavy sediment by scooping without significant loss of chemicals. When the bath volume was allowed to decrease to 2,100 liters below working volume no significant changes in amitraz and Ca(OH)2 concentrations occurred. Data collected from 796 baths showed a significant concentration change of +0.00066% amitraz and -0.017% Ca (OH)2 per 1,000 head of cattle. Replenishment per 700 liters of water with 254 g amitraz was found to be in good agreement with 250 g recommended by the manufacturer, while 12.53 kg for lime was substantially more than the 10 kg recommended.
在新南威尔士州北部蜱隔离区的牛浸浴池中，研究了0.025%（w/v）双甲脒（以50%（w/w）活性成分可湿性粉剂形式使用）和石灰稳定剂（0.7% Ca(OH)₂）的沉降速率。尽管石灰比双甲脒沉降得更快，但随着浸浴牛的数量增加，两者的沉降速率均下降。在总共浸浴1200头牛之后，搅拌后一小时内的沉降速率可忽略不计，并且在使用后一小时内无需重新搅拌。通过舀取也可以清除浴池中大量的沉积物，而不会造成化学品的显著损失。当浴池体积减少到低于工作体积2100升时，双甲脒和Ca(OH)₂的浓度没有显著变化。从796个浴池中收集的数据显示，每1000头牛，双甲脒浓度显著变化+0.00066%，Ca(OH)₂浓度显著变化-0.017%。发现每700升水补充254克双甲脒与制造商推荐的250克非常吻合，而石灰补充12.53千克则大大超过了推荐的10千克。
