纯羟丙基甲基纤维素（HPMC）和掺假的复配纤维素

纯的羟丙基甲基纤维素HPMC目视状况疏松，堆积密度较小，规模是：0.3–0.4/ml;掺假的HPMC流动性非常好，手感愈加沉，与正品外观存在显着区别。

Hydroxypropyl methylcellulose HPMC pure state visually fluffy small bulk density, the range :0.3 – 0 .4/ml; adulteration HPMC better mobility, feel more heavy, there are obvious differences in the appearance of the genuine.

纯的羟丙基甲基纤维素HPMC水溶液弄清、透光率高，保水率>97%;掺假的HPMC水溶液较污浊，保水率很难到达80%。

Pure aqueous solution of hydroxypropyl methyl cellulose HPMC clarification, high transmittance, water retention rate> 97%; HPMC solution adulteration more turbid water retention rate of 80% is difficult to achieve.

纯的羟丙基甲基纤维素HPMC不应该闻到氨气、淀粉和醇类的滋味;掺假的HPMC通常能够闻到各类滋味，即便无味，也会手感较沉。

Pure hydroxypropyl methyl cellulose HPMC should not smell ammonia, starch and alcohol taste; adulterated HPMC often can smell all kinds of taste, even tasteless will feel heavy.

纯的羟丙基甲基纤维素HPMC粉末在显微镜或放大镜下是纤维状;掺假的HPMC在显微镜或放大镜下能够观察到颗粒状固体或晶体。

Hydroxypropyl methylcellulose HPMC pure powder under a microscope or magnifying glass is a fibrous; HPMC adulterated under a microscope or magnifying glass to observe the particulate solid or crystals.