| 摘要 |
Provided is a moisture indicator which includes a main indication liquid and an additive liquid. The main indication liquid is composed of: 0.1-3 wt% of a main indicator; and 97-99.9 wt% of a first solvent which is a standard buffer solution with pH 8-12. The additive liquid is composed of: 0.5-5 wt% of a humidifying agent; 0.5-5 wt% of a pH regulator keeping the solution basic so as to change colors; 0.01-0.5 wt% of a color complementing agent which is a natural water-soluble dye; 5-20 wt% of a viscosity agent as a polymer which can be dissolved in water or completely mixed with water; and 70-90 wt% of a second solvent. According to the present invention, showing definite color variation by moisture, the presence of moisture can be easily detected. Thus, the moisture indicator is applicable to fields where moisture removal is required. |
