This study was conducted at the FMPE Division in the Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh during the period of January–May 2003. Dried BARI lentil-1 was collected from the Pulse Research Centre of BARI. The initial moisture content was determined by drying the lentil sample in an air ventilated oven at 103 °C for 72 h (ASAE, 1993). Four levels of moisture contents of lentil seeds were selected as 10.33%, 14.25%, 18.10% and 21.00% (wet basis). The samples at the selected moisture contents were prepared by adding a calculated amount of water and sealing them in separate polythene bags and storing in a refrigerator at 7 °C for 72 h. Before each experiment, the required sample was taken out from the refrigerator and kept sealed in an ambient environment for 24 h to equilibrate the water and temperature throughout the sample. The sample is kept in the ambient environment in sealed conditions so there is no chance of change of moisture content. Static and kinetic coefficients of friction were determined at the moisture contents of 10.33%, 14.25%, 18.10% and 21.00% (wet basis).