Avalon Sciences Ltd (ASL) designs and manufactures advanced borehole seismic equipment. Our Geochain™ system is rapidly becoming the industry standard with over 100 recorders and 1000 receiver tools deployed globally. Geochain's popularity has grown exponentially due to its ease of use, low maintenance overhead and its ability to deliver high performance and top quality data whilst minimising rig time. Our Acq© software suite has also been very widely adopted as the tool of choice for borehole seismic data acquisition. Running on PC's on the Microsoft Windows platform the software is very easy to learn and use and delivers all the commonly required functions. Under our continuous development programme new capabilities are being added all the time and a simple programming interface means that customers can add their own special purpose functions.