Colorful Heart 48Pcs sheet 20mm Synthetic Filter Paper Sticker For Under Wide Mouth Jar Lid Mushroom Cultivation Supplies

EPTFE is a new waterproof and breathable material. The waterproof and breathable membrane has three functions: 1. waterproof: micro pores of 0.1-1.0 m, with pore diameter less than 10000 times that of water droplets, making it impossible for water to pass through, effectively protecting sensitive parts, avoiding liquid erosion, and improving product service life. 2. air permeability: the pore diameter of the micropore is 700 times larger than that of the water vapor. It is waterproof and allows the air to pass smoothly. It can effectively dissipate heat, prevent the inner wall of the product from fogging, and balance the air pressure inside and outside the space. 3. dust prevention: the microporous channels form a network three-dimensional structure in the membrane, with uniform and dense microporous distribution, so that the dust is blocked to achieve effective dust prevention effect, and 0.1 micron particles can be captured. Main functions: 1: Effectively block water, salt and other