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Silica Gel Desiccants
Silica Gels for Desiccators and Desiccant Cabinets
The microporous structure of silica gel affords a high surface area (up to 800 m2/g) that is ideal for the scavenging of atmospheric moisture. Since there is no chemical reaction associated with the dehydration process, desiccated compounds are never exposed to harmful by-products or contaminants.
Silica gel is used widely as a laboratory desiccant for the following reasons:
Standard white silica gel is referred to as being non-indicating. Self-indicating silica gels possess a chemical compound or dye that changes colour as moisture is adsorbed.
Our Material Harvest® self-indicating desiccants are available in “blue to pink” and “orange to cream” format. Please note that medium size granules (1 – 5 mm) are suitable for laboratory desiccants whilst larger granules (2 – 5 mm or 4 – 8 mm) are normally employed in dynamic adsorption processes.
Silica Gel Packets for Commercial Applications
Sachets or bags that contain silica gel must be flexible, robust and able to “breathe” (so that water molecules can penetrate the packet and be adsorbed by the desiccant). Standard sachet materials include tea-bag paper, fabric, cotton, oriented polypropylene (OPP) and Tyvek™; the packet itself can be either heat-sealed or sewn.
Our affiliated manufacturer has developed a wide range of silica gel sachets and bags that are suitable for use with the following products:
Our packed desiccants are available in non-indicating and self-indicating format. Please contact us with your exact requirements or to make an enquiry so that we can identify the type of silica gel and packaging combination that is best suited for your applications.Exceptional volume discounts are available for food and sundry exporters.