PROBLEM TO BE SOLVED: To easily measure hardness without using a refractometer.SOLUTION: A method for measuring the hardness of a processed material, an apparatus for measuring the hardness of a processed material, and a hot immersion processing apparatus, each of which measures the hardness of a processed material during immersion processing as a solid content while immersing the processed material in an immersion liquid to which a solute substance has been added and while transferring the solute substance to the processed material, are characterized in that the hardness of bean jam or the like is converted into numerical values or the like for easy measurement and sequentially displayed in a display part 20 according to the following formula: solid content=(Dry Weight of Processed Material/Total Measured Weight during Immersion Processing), based on the dry weight of the processed material before immersion and the total measured weight during immersion processing.COPYRIGHT: (C)2011,JPO&INPIT【課題】屈折計を用いずに固さを簡易に測定可能とする。【解決手段】溶質物を添加した浸漬用液体に被加工物を浸漬しつつ溶質物を被加工物に移乗させつつ浸漬加工中の被加工物の固さを固形分率として測定する被加工物固さの測定方法、被加工物固さの測定装置、加熱浸漬加工装置であって、浸漬前の被加工物の乾燥重量と浸漬加工中の全測定重量とから、固形分率=被加工物の乾燥重量/浸漬加工中の全測定重量とし、餡の固さ等を数値等に換算して簡易に測定し、表示部20に逐次表示することを特徴とする。【選択図】図1
