Dip tube sinkers are perfectly designed to eliminate the issues of consistently shifting or floating dip tubes along with the potential suction hazards that occur. The tubing connects easily to the hose barb, ranging in sizes from 1/16" to 1/2". The bottom of the Anchor is developed with a recessed bottom to ensures optimal depth and flow rate without risk of suction against the vessel. The Anchor body diameter also ranges from 0.75" to 1". EZBio® Anchors are constructed from solvent-resistant, autoclavable, Class VI PVDF with sterile and non-sterile availability.