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Card Dimension : 1.5"(3.8cm) x 4.5"(11.5cm). Humidity indicator cards are sensitive to temperature, humidity, atmospheric pressure, and wind. Therefore, they do not work well in open air. They work well and display accurate relative humidity level in enclosed space..
When You Initially Open the Card, All Dots Sometimes React and Change Color Because They are Exposed to Sudden Humidity. If You Wait for About 30 minutes, the Card will Calibrate and You will be able to Read the Humidity Level. - 6 Spots Humidity Indicating(10%/20%/30%/40%/50%/60% RH - Clear Color Change).
Indicator Changes Green to Purple(Violet) - Green(Dry) to Purple(Humid).
CONTINUOUSLY & ACCURATELY Displays Humidity Level - If the humidity level becomes lower, the strip will change back to Green (the original color). Just because the color has changed to the next level does not mean it cannot go back to the previous color. The colors will change depending on the humidity level. Colors may fade with long term use of more than 20 times..
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DRY & DRY - OUR PRODUCTS
Dry & Dry Humidity Indicator Card is Cobalt Chloride Free.
It is ristrictly tested for clear color change
It is Eco Friendly.
DRY & DRY - PREMIUM QUALITY
Our Humidity Indicator Card is the highest quality in the industry for Humidity Measurement.
It is ristrictly tested for clear color change in each Humidity Level(10%-60%)
You can experience a big difference compared to other products.
Products of Dry&Dry guarantees 100% satisfaction. NO RISK
If you have any problems about our products, we will give you a free replacement or full refund.