Speciality Products :

We thrive on innovation.

For over three decades, we’ve been at the forefront of supplying top-notch thermochromic, photochromic, and Aroma products to customers worldwide. Situated in Japan, Matsui’s cutting-edge R&D department has been a hub for pioneering innovations. Introducing our latest creation, Aqua Indicator, we believe our array of special effects products can elevate your merchandise, making it not just unique but irresistibly compelling.

Color Changing Materials - Hydrochromic

Moist Indicator

Moist Indicator

This product detects humidity by utilizing a water soluble pigment (aqua indicator),which becomes darker in color as the humidity increases and accumulates. It is clear to very light color in low humidity environments, slowly changing to darker color when exposed to high humidity, and will maintain its color once it has changed.

TECHNICAL INFORMATION SHEET

Available Colors
Blue
Black
Red
Green
Performance Information
moist indicator color change graph
[TEST METHOD]

Leave the humidity indicator in both 10~15% humidity and 70~75% humidity environments for a set period of time and measure the color concentration (cyan concentration measured with a spectrophotometer) at set intervals

Moist Indicator chart
Paper Information
  • Paper weight: 105.01 g/m2
  • Thickness: 0.131mm
  • Density: 0.80 g/cm3

The color changing speed will vary depending on the type of paper used.

[Caution]
  • The color sensitivity of the product decreases when exposed to sunlight, so please store the product in a place that avoids direct sunlight.
  • Although the product only slightly changes color under high humidity conditions, please avoid storing it in humid environments.
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