Specification Material: 304 stainless steel Optional specifications: 1L , 2L , 2.5L , 3L , 5L Method of Application 1. Before sampling, put the rubber tube on the water outlet of the water sampler, clamp the front end of the rubber tube with a water sealing clip for sealing it, and then open the upper covers at the top of the water sampler. 2. Tightly tie a sampling rope with a appropriate length to the handle of the sampling bucket, and place it slowly and uniformly in the water area where the water will be collected. 3. The sample is injected from the bottom of the water sampler and discharged from the upper covers . The depth at which the water sampler stops is the depth of the sample. 4. When the water sample device stays at a proper depth and stands still, the valve at the bottom and the upper covers will be closed. 5. Then slowly lift the water sampler, open the water sealing clip and pour the collected water sample into a suitable container. Precautions: Please don't use this water sample barrel to contain high-strength acidic /alkaline liquid and wash it with clear water in time after use to avoid corrosion affecting the next use. Remember to clamp the water outlet before using it, and then open the upper covers on the water sampler. Make makes on the rope. When it sinks to a proper depth, the rope is lifted upwards, and both ends of the water sampler will automatically close. Be careful not to touch the bottom of the water sampler after lifting the water surface, otherwise the water sample will easily leak.