PROBLEM TO BE SOLVED: To provide a spill-resistant composition for biological tissue fixation in which the scattering of formaldehyde and liquid spill are suppressed, and further, to provide a vessel stored with the composition for biological tissue fixation.SOLUTION: Provided is a vessel containing a composition for biological tissue fixation provided with: a composition for biological tissue fixation containing: a gelling agent water and formaldehyde as effective components, and also provided is a vessel containing a composition for biological tissue fixation provided with vessel a first layer made of the composition for biological tissue fixation and a barrier layer laminated on the upper face of the first layer.SELECTED DRAWING: None
