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 ... safest of the world beer industry beer stabilizer . 3.Helps improve the filter effect . Beer chemically stable , excluding beer solubles , diatomaceous ...