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农药稀释计算中,倍数在100倍以下(包括100倍)时,采用内比法,如稀释50倍,即原药剂1份加稀释剂49份;如果稀释100倍以上时,采用外比法,即计算稀释时量不扣除原药剂所占的1份。直接用计算出的药剂份数进行稀释,因此时误差已小于1％,如稀释1000倍液,即用原药液1份加稀释剂1000份。 1 根据有效成分(溶质)的计算 计算公式为:原药剂浓度×原药液重量=稀释药剂浓度×
In the calculation of pesticide dilution, multiples of 100 times the following (including 100 times), the internal ratio method, such as dilution of 50 times, that is, the original agent 1 and diluent 49; diluted more than 100 times, the use of external ratio method, The calculation of the amount of dilution does not deduct the original agent accounted for 1 copies. Directly calculated with the number of pharmaceutical dilution, so when the error has been less than 1%, such as the dilution of 1000 times, that is, with the original liquid 1 and add 1000 copies of the diluent. 1 According to the calculation of the active ingredient (solute) formula is: the concentration of the original drug × the weight of the original liquid = the concentration of diluted drug ×