Blue silica gel includes blue indicating silica gel, color-changing silica gel and blue silica gel. It can be divided into spherical and crystal shapes. Meanwhile,it has a property of turning pink from blue after absorption.

Cobalt-free color-changing silica gel (orange silica gel) has the performance of changing its own color after absorbing moisture. Compared with blue silica gel, orange's does not contain cobalt chloride (in 1998 the EU identified cobalt chloride as Class II carcinogen), and it is more suitable for customer's use.

Size: 1-3mm, 2-4mm , 3-5mm, 4-8mm etc.

Loss on heating: ≤2% ;  ≤5%

Packing: 25kg/bag or 500kg/bag.

The moisture,packing and size can be adjusted according to customer's different requirements.