Beta Water Samplers, Horizontal Acrylic, Kit - Includes carry case, Transparent acrylic, 2.2L Intended for shallow or deep waters, these bottles are called “horizontal” because they descend, parallel to the bottom. They are pulled sideways just before closing by the operator, which ensures a representative water sample for that specific depth. They are ideal for sampling at the thermocline, at other stratification levels, or just above the bottom sediments. These popular and versatile bottles come in your choice of transparent acrylic or opaque PVC. PVC is more durable and less costly, but the acrylic allows you to view the bottle contents immediately. When running metal, organic, or any other chemical analyses, it is best to run a blank on the sampler prior to use. A thermometer can be mounted inside acrylic Beta bottles.