Introduction

Humidity indicator card can easily detect relative humidity in a sealed package. It is a convenient and inexpensive way to detect humidity in the environment. The user can quickly judge the environment humidity situation and the use condition of the desiccant by the change of color on the card.

Classification

1.Cobalt-containing humidity card:: to judge the humidity condition directly from color change. Its principle is based on color changes that produced by the cobalt chloride after water absorption, [Co (H20) 4 cl2] for blue [6] Co (H2O) 2 + is pink, The card is blue in dry humidity, if the circle color changes from blue to pink, indicate the humidity within the package reach or exceed the circle corresponds to the relative humidity value.

2.cobalt-free humidity indicator card does not contain cobalt chloride, health and environmental protection;It is a convenient and inexpensive way to detect humidity in the environment.The user can quickly judge the moisture and desiccant in the packaging by using the color on the card. If the humidity in the package exceeds or equal to the humidity value, the corresponding point on the card will change from the dry color into the absorbent color, so that the user can easily know the use effect of desiccant.

Features

1. Easy to use, easy to observe, quickly determine the humidity value

2. Large humidity indication range (cobalt: RH10% to RH100% no cobalt: RH10% to RH85%)

3. High sensitivity of humidity indication, ± 5% under relative humidity

4. Reusable (reuse after drying)

Specifications

Humidity indication:10%、20%、30%、40%

Application description:It can accurately indicate 10% -40% relative humidity to determine whether the desiccant loss of efficacy.

The scope of application:For general packaging protection

Package:200/can

Special requirements

Humidity card can be customized according to the customer requirements