PROBLEM TO BE SOLVED: To provide a storage body that can suppress generation of a drip even when wrapping an object to be frozen during magnetic field-applied freezing, and to provide a method for producing the storage body storing the object to be frozen.SOLUTION: The storage body is made of a material whose surface resistance is 1.3 × 1010Ω/SQUARE or less, or which is obtained by compounding a prescribed polymer and potassium-ionomer and has 19% or more of the compounding ratio of the potassium-ionomer, and is used during magnetic field-applied freezing.COPYRIGHT: (C)2013,JPO&INPIT【課題】印加冷凍時に冷凍対象物を包んでいてもドリップの発生を抑制できる収納体、及び、冷凍対象物を収納した収納体の生産方法の提供。【解決手段】表面抵抗が1.3×1010Ω/□以下、又は、所定の高分子物質とカリウム-アイオノマーとを配合した材料であって、カリウム-アイオノマーの配合比が19%以上である材料からなる収納体を、印加冷凍時に用いる。【選択図】なし