Accessories GDS supply a host of geotechnical accessories to complement their products and those of other manufacturers. If you require something that is not listed below please contact us at info@gdsinstruments.com. Topcap and Pedestal Sample Prep Kit Soft Soil Membrane Placement Jig High Air Entry Porous Disk Hydraulic Tubing Toxic Interface Unit Hydraulic Connector Kit USB to IEEE Cable USB to RS232 Converter Bellofram Rolling Diaphragm Flexible Piston (Rowe and Rowe and Barden type) Access Rings GDS Nold DeAerator™ Training and Installation De-aired Water Distribution Panel