Drop tube intake assemblies for Geotech Portable Bladder Pumps. A drop tube moves the intake point below the pump body, so you can draw from near the base of the screened interval without lowering the whole pump to that depth.

That matters in short screens and in wells where you want the intake at a specific horizon — you set the pump where it fits and let the drop tube reach the water you actually want to sample.

Each assembly includes the hose barb sized for its pump: 1/2" on the 1.66" assemblies and 1/4" on the 0.675" and 0.85" assemblies. A PFAS-free version of the 1.66" assembly is available for programs where PFAS is an analyte.

These are replacement and add-on assemblies. Pumps ordered in a drop tube configuration already include one — see the drop tube options on the 1.66", 0.85" and 0.675" pumps.