亚洲精品国产精品发布会_无码中文字幕A级毛片_8x成年视频在线观看_亚洲AV无码日韩AⅤ无码忘忧草_王色a片可以看播放_午夜福利极品视频_美女被啪啪激烈爽到喷水_色婷五月综激情亚洲综合_真实国产老熟女粗口对白_最好看最新中文字幕2019

【Scope of application】

It is used to determine the pressure difference index of medical surgical masks under specified conditions.

【Guideline】

YY 0469-2004 Technical requirements for medical surgical masks

Y/T 0969-2013 disposable medical mask

【technical parameter】

1. Flow meter range: 0-10L/min, accuracy: 3%

2. Digital differential pressure measurement range: 0-2000Pa, accuracy: 1Pa

3. Air pumping capacity: 8L/min

4. Experimental area: 4.9cm2, 5.06cm2

5. Dimensions: 460-500-670mm

6.Weight: 25kg

7. Power supply: AC 220V 50Hz 300W