Premium Humidity Indicator Cards 20 Pack - 10-60% 6 Spot(20 Cards)

Premium Humidity Indicator Cards 20 Pack - 10-60% 6 Spot(20 Cards) Color Changing Humidity Indicator Cards Pack of 20 ( 20 Cards) 6 Spots Humidity Indicating - (10%/20%/30%/40%/50%/60% RH) - Clear Color Change As the humidity increases the chemically impregnated spots change from a blue color (DRY) through a pink, to a lavender color (HUMID). READ AT LAVENDER BETWEEN PINK AND BLUE. DRY & DRY - OUR PRODUCTS  Dry & Dry Humidity Indicator Card is Premium Quality.  It is strictly tested for clear color change  DRY & DRY - PREMIUM QUALITY Our Humidity Indicator Card is the highest quality in the industry for Humidity Measurement.  It is strictly 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.  If you have any problems about our products, we will give you a free replacement or full refund.