National Diagnostics have two types of bone decalcifying solutions. Calci-Clear which may be used to decalcify any tissue type. This solution of efficient chelating and sequestering agents removes and binds all calcium and other metal ions under treatment. Interference with subsequent staining is reduced while tissue distortion and structure loss is minimized.and Calci-Clear Rapid is a high-speed decalcifier which permits the processing of tissue samples in considerably less time than with other decalcifiers. Tissue distortion and structure loss are minimized while excellent staining characteristics are maintained