国产一级淫片播放视频_性色av高清一级_国产亚洲日韩欧美综合_老熟女对白放荡合集_亚洲高清中文字幕精品_公交車倫流澡到高潮hnp電影_污污网站国产在线观看_亚洲欧美一二三区在线观看_三级三黄在线免费观看_浓精喷进老师肉色丝袜

How to deal with high OTR value of gas permeability meter:

1. Determine whether the leakage is caused by uneven application of sealing grease. (This fault is more common)

2. Determine whether the expected OTR value is accurate.

3. Determine that there is no leakage in the nitrogen gas line from the nitrogen tank to the instrument and from the oxygen filter to the input port.

4. Determine that the nitrogen is high-purity nitrogen (99.99%).

5. Determine that the lubricant is sufficient to seal the film tightly.

6. Determine that the lid of each test chamber is tightened.

7. Determine that the film has no wrinkles, gaps, pinholes, etc.

8. Determine that the temperature is the required temperature. Generally, the higher the temperature, the higher the oxygen permeability.

9. Make a calibration with a certified standard.