insert the sampler into the liquid under closed condition.
reach the required depth, pull up the cup sampler top to allow the liquid to enter.
when no bubbles emerge, push down the sampler and cover the lid on the cup sampler, where the sampler gets the sample.
take out the cup sampler and pour out the sample.
This sampler is a common liquid sampling tool and suitable for sampling shallow liquids. It is widely used in pharmaceutical, chemical, environmental protection, cosmetics and food industries. Suitable for sampling at a point below the liquid surface.