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在配制乳酸环丙沙星注射液按常规投药量加活性炭时，活性炭对乳酸环丙沙星有较大的吸附作用，同时调节不同的pH值对其含量也有一定的影响。作者经过反复实验证明活性炭的用量为投药量的0．02％、pH值调到4．00时乳酸环丙沙星被吸附的量最少。
In the preparation of ciprofloxacin lactate injection by conventional dosage plus activated carbon, activated carbon on ciprofloxacin lactate has a larger adsorption, while adjusting the different pH value of its content also have a certain impact. After repeated experiments, the author proved that the dosage of activated carbon was 0.02% of the dosage, and the amount of ciprofloxacin lactate adsorbed was the least when the pH was adjusted to 4.00.