两步法配制药液,是先用少量水将药剂调成浓稠母液,然后再稀释到所需浓度,它与一次配药相比,有许多优点: 1 能够保证药剂在水中分散均匀。例如可湿性粉剂,粉粒往往团聚在一起成为粗团粒,如果直接投入药水箱中一次配液,则粗团粒尚未充分分散便沉入水底,此时再进行搅拌就很困难。因此,先用少量水配成较浓 The two-step method for preparing a medicinal solution is to first dilute the medicinal solution into a thick mother solution with a small amount of water and then dilute it to the desired concentration. Compared with one-time dispensing, the medicinal solution has many advantages. The medicinal solution can be uniformly dispersed in water. For example, wettable powder, powder often together to become coarse particles, if directly into the tank with a solution, the coarse particles have not yet fully dispersed into the water, then stirring is very difficult. Therefore, first with a small amount of water dubbed thick