Manual. . place your hygrometer inside the bag and close the zipper completely. let the calibration kit sit for at least 24 hours at room temperature (between 18 and 24°c). the hygrometer should read 32% humidity. if not adjust your hygrometer.. . mark. boveda. . colors. beige sachet with method of use on the back (english). . presentation. calibration kit delivered in its plastic bag to be kept for use. . specificities. a revolutionary new system for your humidors: boveda humidipak. created in the mid - 90s this product will make your life considerably easier. delivered ready to use you put it in your cellars and you don't have to worry about anything anymore. constantly adjusting to changes in the outside climate your object will not suffer any variation in temperature or humidity for an optimal lifespan.. . calibration kit for hygrometer 32% boveda: . calibrates your hygrometer at 32% relative humidity whether analog or digital in 24 - 36 hours. autonomous easy to use. this kit will keep for 2 years before opening 3 months after. no maintenance and no activation required. . dimensions. calibration kit for boveda 32% hygrometer: length x width x thickness (cm). 17.5 x 14.5 x 0.3cm