
外观变化检查:观察样品在贮存前后颜色、状态、均一性及有无析出物或沉淀产生,评估产品物理形态的稳定性。
粘度变化率测定:测量样品在特定温度和剪切速率下的粘度值变化,量化流体产品在贮存过程中流变特性的稳定性。
pH值稳定性测试:监测样品酸碱度随贮存时间的变化,判断其化学环境的稳定性,尤其对水基产品至关重要。
有效成分含量分析:采用色谱等分析方法定量检测活性物质或关键组分的残留量,评估化学降解或反应程度。
水分含量变化监测:测定样品在贮存期间水分的吸收或损失情况,水分变化直接影响产品的化学稳定性和微生物安全性。
沉降体积或分层观察:评估悬浮液或乳液体系在静置贮存后固液分离或油水相分离的趋势与程度。
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