HEADER IMAGE.jpg

Welcome to our web pages.
We have been manufacturing and supplying silica gel sachets
and other desiccant products in the UK since 1983.

Registered to REACH
and ISO 9001:2015
we offer many variations from our standard range of stock items
to individually meet customers' moisture protection requirements.

What is silica gel ?

Silica gel adsorbs moisture from enclosed spaces to prevent damage caused by corrosion and mould growth.

It is an amorphous form of silicon dioxide, which is synthetically produced in the form of
hard irregular granules (having the appearance of crystals) or hard irregular beads. A micro-porous structure
of interlocking cavities gives a very high internal surface area (800 square meters per gram).


It is this structure that makes silica gel a high capacity desiccant.


Water molecules adhere to the gel's surface because it exhibits a lower vapour pressure than the surrounding air.
When an equilibrium of equal pressure is reached, no more adsorption occurs.
Thus the higher the humidity of the surrounding air, the greater the amount of water that is
adsorbed before equilibrium is reached. It is in these higher humidity conditions
(above 50% Relative Humidity) that stored or in-transit items are susceptible to damage.

The beauty of silica gel is the physical adsorption of water vapour into its internal pores.
There is no chemical reaction, no by products or side effects.
Even when saturated with water vapour, silica gel still has the appearance of a dry product, its shape unchanged. 


Standard white silica gel is referred to as being non-indicating.
As it adsorbs moisture it remains physically unchanged.

Self-indicating silica gels have a moisture sensitive additive added to the basic silica gel.
This indicator changes colour as moisture is adsorbed thus giving a visual indication as to the activity level of the silica gel. 

OUR PRODUCTS

  • SILICA GEL
    in BULK

    Loose silica gel, all grades
    in airtight foils, tubs and drums
    Non-indicating, white, silica gel
    Self-indicating silica gels
    orange to green
    orange to colourless (pictured)
    and blue to pink

    Beaded and granular physical forms
    Pack sizes include: 500 gram, 1 kg
    3 kg, 4 kg, 10 kg, 12½ kg
    25 kg and 150 kg

  • SILICA GEL

    SACHETS

    Non or self-indicating silica gel packed
    in 
    Tyvek, laminate, fabric, cotton and
    paper sachets. Heat-sealed and sewn
    Stock silica gel sachet sizes:
    ½ gram, 1 gram, 3 gram, 5 gram
    10 gram, 25 gram, 50 gram
    100 gram, 250 gram, 500 gram
    1 kg and 2½ kg

    plus FDA grade sachets, Bandoliers
    Def Stan 81-68/4 and MIL-D-3464E bags

     

  • MOLECULAR SIEVE

    DESICCANT

    Grade 3A, 4A, 5A and 13X (10A)
    desiccant molecular s
    ieves
    sold in bulk and in sachets

    plus desiccant clay sachets
    ½ unit, 1 unit, 2 unit, 4 unit
    8 unit, 16 unit, 32 unit and 80 unit  

    High capacity desiccant poles for
    shipping containers and long term storage
    Desiccant grade activated alumina
    Humidity indicator cards and papers
    Activated carbon

sales@geejaychemicals.co.uk

Telephone  :   01767 682774

International: +44 1767 682774

Fax :   01767 699697

International: +44 1767 699697

1 Beamish Close
SANDY
Bedfordshire
England
SG19 1SD