silica gel blue,white bead form,size 1--2mm,1--3mm,2--5mm supply over 30 kinds of ... gelblue,whitebead form,size 1--2mm,1--3mm,2--5mmsupply over 30 kinds of silica gel in ... white or blueSize : bead form or granular form, from 0.2--1.0mm,1--3mm,2--5mm,3--6mm,4-- ... harmful gases for atmospheric monitoring & mining industry.Basic SpecificationSilica Gel bead 2-5 mm, Absorption Capacity: RH = 20 % RH = 35 ...