... 5mm,3--6mm,4--8mm,etc.Product list : 1) FNG Silica Gel: Spherical Sharp, used for air drying in the air ... , Struture lying between macro-pored and fine-pored silica gel.4) Blue Silica Gel: Lumps or Spherical Sharp, After absorbing Moisture, ... : Similar to fine-pored Silica gel, Its selective adsorptive capability is higher than fine-pored silica gel.10) Silica gel for Column layer Chromatography: ...