3dots 4dots 6dots Hygro Humidity Indicator Card

3dots 4dots 6dots Hygro Humidity Indicator Card

A humidity indicator card (HIC) is a card on which a moisture-sensitive chemical is impregnated such that it will change color when the indicated relative humidity is exceeded. This is usually blotting paper impregnated with cobalt chloride base, or less toxic, copper chloride base. This item is an inexpensive way to quantify relative humidity levels inside sealed packaging. They are available in many configurations and used in many applications, especially military and semiconductor. The most common humidity indicator cards change color from blue (less than indicated RH level) to pink (greater than indicated RH level). United States Military Specification Mil-I-8835A is the governing specification for a humidity indicator card. The humidity indicator card is also specified for use in J-STD-033 which is the standard for Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices, also known generically as semiconductors.

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Product Details



Humidity Indicator Card ( HIC )


Blotting Paper

Colors changed from dry to wet

(choose one color)

Blue to pink                  -3dots, 4dots,6dots

Yellow to Green            -3dots, 4dots,6dots

Brown to blue                -3dots, 4dots,6dots


in an air-tight can

Indicate Spots

   3dots, 4dots,6dots

Pack Quantity

250PCS/Can, 3000pcs/Carton


GJB2494-95, MIL-I-8835A

Expiration Date

2 Years





Chunwang Environmental Protection Technology Co., Ltd



Q1: What is your product line?

We, Chunwang Technology Co.,Ltd., located in Shenzhen, China,  Meanwhile, we are a major exporter of Clean room products, ESD products, Tools & Instruments for electronic assembly industry.Established in 1998, we have been serving electronic assembly industry in China and worldwide for over a decade, very popular due to good quality and competitive pricing and professional service

Q2: What is ESD?

Elector-Static discharge (ESD), also called anti-static, is used to describe the effect of two objects rapidly transferring a discharge of static electricity between them. ESD can occur when two electrical objects or an electrical object and a person are in close contact. The result can cause damage to an electrical device or even cause it to stop working completely.

Established in 1998, Chunwang is well-known as one of the leading manufacturers and suppliers of 3dots 4dots 6dots hygro humidity indicator card in China. During the past two years, we have introduced advanced equipment and technology into our factory. Please be free to buy our cheap products made in China.
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