The present invention provides a novel bag-type water holding container for steam supply use, in which almost rectangular two plastic resin films are overlaid on each other, three sides in the peripheries of the laminate of the films are sealed, and the remaining one side is rendered openable and therefore serves as an opening, said water holding container being characterized in that a non-woven fabric having vapor permeability, water resistance and bacteria barrier properties is arranged at the center of at least one of the plastic resin films, multiple hanging through-holes are provided at the opening, and a re-sealable opening/closing zipper is provided at a part of the opening which is located in the rather central position than the through-holes to thereby enable water to be held in the inside of the films. The zipper which is sealed after the supply of steam is opened, and a used culture tool or a culture solution is placed in the inside of the container, and then the zipper is re-sealed. In this manner, it becomes possible to prevent the occurrence of cross contamination in a cell processing center (CPC) and it also becomes possible to sterilize the used culture tool or the culture solution with an autoclave.La présente invention concerne un nouveau récipient de retenue deau de type sac qui est destiné à être utilisé pour fournir de la vapeur, deux films de résine plastique presque rectangulaires étant superposés lun sur lautre, trois côtés sur les périphéries du stratifié des films étant scellés, et le côté restant pouvant être ouvert et servant par conséquent douverture, ledit récipient de retenue deau étant caractérisé en ce quun non tissé ayant une perméabilité à la vapeur, une résistance à leau et des propriétés de barrière contre les bactéries étant agencé au centre dau moins lun des films de résine plastique, de multiples trous traversants de fixation étant présents au niveau de louverture, et une fermeture à glissière à ouverture/fermeture refermable
