中国药典(85)二部规定,对100ml以上静脉滴用注射液进行不溶性微粒检查,在检查中所用的净化水通常采用位差过滤法制备,但是位差法因受净化室内高度的限制,造成位差低出水压力小,因而对MJU-25型微孔滤膜滤器。格栅滤膜的冲洗往往难以达到规定要求,甚至影响检查结果的准确性。笔者试用注射过滤器制备净化水,其结果符合药典规定 China Pharmacopoeia (85) two provisions, more than 100ml of intravenous infusion of insoluble particles to check the purification of water used in the inspection are usually prepared by the bit error filter method, but the difference method due to the purification of indoor height limit, resulting in Low bit pressure water pressure is small, so the MJU-25-type microporous membrane filter. Grille filter cleaning often difficult to meet the requirements, and even affect the accuracy of inspection results. The author tried injection filter to prepare purified water, the results in line with Pharmacopoeia regulations