Extremely easy-to-use, the Univo Electric Capper works with all sample storage 96-format tube and rack combinations, without use of adapters. For capping, simply place the rack filled with tubes in the sample holder and place a capmat, capband or capcluster on the tubes. The capping process is completed automatically by gently pushing in the sample drawer to close it. A controlled pressure system presses all the caps down evenly to ensure uniform, high integrity storage of your samples in capped tubes.