Usually Desiccant industry typically measures the moisture absorption effect of desiccants through the "weighing method", regardless of whether it's physical absorption Desiccant or chemical absorption desiccant, the "weighing method" can be used to test the moisture absorption effect of the desiccant. Taking Haiyunbao desiccant 2g (45*60mm) as an example, the test steps are as follows

(1) Prepare materials: 2 plastic cups, a piece of fiber paper with good breathability and hardness, and a pack of unopened desiccant samples.

(2) Fill one plastic cup with hot boiling water, place it on a flat table, and put the white paper on top of the plastic cup (the plastic cup should not touch the water).

(3) Unpack a desiccant, take out a sample, weigh it, and record the weight before moisture absorption Desiccant as M1,

(4) Place the desiccant on the fiber paper and quickly cover it with another plastic cup to maintain a sealed environment.

(5) At 12h, 24h, 36h, 48h, etc., record the weight of the desiccant as M2, respectively (water droplets on the desiccant surface should be wiped dry for accurate data).

(6) Use (M2-M1)/M1*100% to calculate the moisture absorption rate of the desiccant at different times.

(7) Continue observing until the desiccant's weight no longer increases, which will give the maximum moisture absorption rate of the desiccant.

If the desiccant sample is too large, a plastic sealed box (a food fresh-keeping box will do), a small bowl, and a wire mesh capable of bearing weight (plastic bowls, breathable white paper are also acceptable) can be used to simulate the sealed environment required for desiccant moisture absorption;

Note: If you need to measure the moisture absorption rate in a short period, you can replace the hot boiling water with new hot boiling water after the water in the cup cools down. The purpose of using hot boiling water is to ensure that water vapor evaporates quickly, thereby Desiccant achieving saturation in moisture absorption within a short time.