... , leather, costume, food, medicine and household appliances.Main Index and Specification:First class blue silica gel (2-4MM)Appearance: blue or ... RH=35%% ≥14.0, aubergine RH=50%% ≥23.0, pinkParticle size distribution more than 4MM, %≤1.0 3-4MM %35.0 ... .0-65.0 less than2MM %≤0.4FPY of particle size, %≥98.6FPY of spherical particle, %≥95.0Bulk Density G/L770-810Loss on drying ...