目的 探索血液透析浓缩B液的抑菌方法，使之符合国家行业标准要求。 方法 通过控制二氧化碳或氮气输入量来控制溶液含氧量，从而抑制细菌生长。 结果 使B液中的含氧量降低，就能使B液的稳定性提高。 结论 氮气不能抑菌但可驱除溶液中的氧，二氧化碳气体既可驱氧又能抑菌。

Objective We explored the bacteriostasis method for B concentrated dialysate, so as to conform the industrial standards of China. Methods We decrease the oxygen content by controlling the amount of carbon dioxide or nitrogen in solution, through which bacterial growth rate is inhibited. Result The stability of B concentrated dialysate is enhanced when oxygen content in solution is reduced. Conclusion Nitrogen can replace oxygen in solution despite no bacteriostatic activity from nitrogen. Carbon dioxide can replace oxygen in solution and also has bacteriostatic activity.