SPL® Conical Tube 錐形管, Conical Bottom, PS/HDPE, 15ml, RCF 3000xg, Sterile to SAL 10-6([TDS] SPL Conical Tube.pdf) Conical Tubes are widely used in laboratories from storage of samples to high speed centrifugation. SPL Life Sciences provides very high strength and non-toxic conical tubes to meet the demands.