1-100% silicone 2-Tasteless, non-toxic, flexible 3-Good-sealing 1 beer silica gel has a large surface area and numerous suitable microporous structure , possibly within minutes cause beer turbid protein adsorption , filtered to remove , to prolong the the beer storage period 180-240 days , to prevent the beer cold muddy . 2 does not affect beer foam and flavors . The physical and chemical ...