Refrigerant pack
AssigneeToppan Forms Co., Ltd.
InventorsNobutaka Ueda, Yasuhiro Tanaka
Life of this patent
Estimating the term…
Abstract
A refrigerant pack is provided with a refrigerant substance containing water, a precipitating component, a non-precipitating component, and a pH indicator, and is configured such that the precipitating component precipitates when the refrigerant substance freezes and is a component not corresponding to the pH indicator, the non-precipitating component does not precipitate when the refrigerant substance freezes and is a component not corresponding to the pH indicator, a change or the presence/absence of coloring in the pH indicator is reflected before and after freezing, and the refrigerant substance changes in color.
Claims6
A refrigerant pack, comprising:
- a refrigerant substance containing water, a precipitating component, a non-precipitating component, and a pH indicator,
- wherein the precipitating component precipitates when the refrigerant substance freezes and is a component not corresponding to the pH indicator,
- the non-precipitating component does not precipitate when the refrigerant substance freezes and is a component not corresponding to the pH indicator, and
- before and after freezing, a change or presence/absence of coloring in the pH indicator is reflected, and the refrigerant substance changes in color.
Dependencies are inferred from the claim text.