啪啪一区二区I国产乱码精品一区二区三区亚洲人I成年人视频免费I国内自拍视频在线播放I五月婷婷网I免费高潮视频I亚洲色,天堂网I毛片视频网I日本中文字幕精品—区二区I老司机成人网I99新香蕉视频I久草麻豆I亚洲激情欧美另类I亚洲偷偷I成人一级片网站I中文视频在线播放I亚洲精品国偷自产在线I在线观看成人

WLF-71 is a liquid dye additive which dissolves in water making the water fluoresce under UV-A ( ultra violet) light. This dye additive is commonly used to help locate leaks in large storage tanks but can also be used to locate leaks in small water reservoirs such as radiators. In practice, it is dissolved in the water in the tank, and then suspected areas of leakage, such as riveted or welded seams, are examined on the exterior of the tank, using a UV-A light. Any place where the water has leaked through the tank will show up as a fluorescent wet spot.

APPLICATIONS

• Locating leaks in large storage tanks
• Locating leaks in small water reservoirs such as radiators