Patent ID: 9689865
Date: 2017-06-27
CPC Classifications: A61L,G01N

Claim:
1. A personal hygiene item, comprising: a first material layer, made of a hydrophobic material, adapted to prevent a fluid under test to pass through the first material layer in liquid state, wherein the first material layer is transparent or translucent; and a second material layer, disposed on a surface of the first material layer, wherein the second material layer comprises a discolored portion and a hydrophilic portion; wherein the discolored portion has better hydrophilic performance than the hydrophilic portion, and the fluid under test permeates into the discolored portion through the hydrophilic portion and is contacted with the discolored portion for color changing reaction, a user can observe the change of the color of the discolored portion via the first material layer for examination.