Dip sampler for simple removal of liquid samples. Good view due to transparent tubes. Upper end with reflux valve, lower end with ball valve.Use All-layer sample Insert the dip sampler slowly into the liquid with the valve open. Close valve. Pull the dip sampler back and take out the sample. Point sampling/soil sample Insert the dip sampler to the targeted point/to the ground with closed valve. Open the valve - the liquid flows in. Close the valve. Pull out the dip sampler, take out the sample.