Formulation attributes after long term stability testing.

Formulations were placed in 30 ml polypropylene bottles and stored at 30°C/65% RH, 40°C/75% RH, and 50°C/ambient humidity. The gels were analyzed at indicated times for pH, viscosity, osmolality, methyl paraben content, and ZA content. The specified acceptable ranges for each parameter are indicated in each column heading. NT = not tested.将制剂置于30毫升聚丙烯（polypropylene）瓶中，分别于30℃/65%相对湿度（Relative Humidity，RH）、40℃/75%相对湿度以及50℃/环境湿度条件下储存。于指定时间点对该凝胶制剂开展检测，检测项目涵盖pH值、黏度、渗透压、对羟基苯甲酸甲酯含量及ZA含量。各参数的规定合格范围已在对应列标题中注明。NT代表未检测（not tested）。