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皮肤角质层含水量测试仪

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Labcan Scientific
18016316889 4009202386
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  • Brand  ASCH
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  • Main Business:经皮水分流失测量仪,皮肤硬度计,激光多普勒血流仪,激光散斑成像系统,超微量pH计
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Last Updated 2025-08-08 18:49

皮肤角质层含水量测试仪

角质层含水量反映了角质层的生理功能,正常情况下,角质层中的水是结合水,在含水量低(大约20%,W/W)时,角质层中的角质形成细胞并不随水的增多而膨胀;而在含水量高(大于57%,W/W)时,角质层中的角质形成细胞随水的增多而膨胀。ASA-M3/R皮肤角质层含水量测试仪是基于电导法,利用角质层中电解质的导电性,当测试探头与皮肤接触后呈现出的与含水量相应的电导,其相关系数可达到0.99,因此电导的变化可灵敏地反映角质层含水量。与电容法相比,电导法对含水量较高的皮肤更敏感些。

ASA-M3/R皮肤角质层含水量测试仪特点:

接触压力可以改变,使其几乎保持恒定,很大程度上减少接触误差,实现良好的测量
接触压力可达25g,所以可以测量实验动物
通过消除电解质成分对皮肤表面的影响,测量角质层水分含量
离子指数可以评估皮肤屏障功能
可以评估化妆品和化学成分在角质层和皮肤表面的残留和保留能力
自动切换电压,可在良好条件下进行测量
通过全数字处理,可以实现一键校准
通过RS232C数字信号输出,可以将数据导入到计算机中

ASA-M3/R皮肤角质层含水量测试仪测量举例:

P值与TEWL值相关联,屏障功能可以和水分含量同时测定。

测定部位

经皮水分流失量
(g/㎡/h)

离子指数P
〔%〕

角层水分量
W(μS)

正常前腕

7.2

4.7

15.4

正常胸部

6.5

4.6

38.5

脱皮部分

14.5

19.1

34.7

指头

16.3

27.2

7.9

肘部

25

43.7

3.5

右脸

12.2

12.3

36.5

ASA-M3/R皮肤角质层含水量测试仪技术规格
测量方法:
双频和相位差振幅检测法
测量项目:
角质层含水量W[μS]
屏障指数P(与TEWL相关)[%]
低频电导率L[μS]
高频电导率H[μS]
角质层厚度T[μm](根据标准计算)

测量范围:
0.0~999.9 μS
0.0~999.9 μm
应用电压:X1、X2、X1/2、X1/2、X1/4、X1/8(自动切换)

Company Name Labcan Scientific
Location
Main Products or Services 经皮水分流失测量仪,皮肤硬度计,激光多普勒血流仪,激光散斑成像系统,超微量pH计
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