Silica Gel Self Indicating, Orange-Green, 2-5mm

Moisture content at 145oC 3% maximum

Equilibrium capacity for water vapour at

25oC and given relative humidity (r.h.)

 

10% r.h. > 8% w/w (weight for weight)

20% r.h. > 12% w/w

50% r.h. > 23% w/w

80% r.h. > 30% w/w

 

BET surface area 600 - 800 m2/g

Pore volume 0.35 – 0.45 ml/g

Average pore diameter 20 – 30 A

pH (10% aqueous solution) Not less than 1.8-2.2

Bulk density 700 - 800 g/l

Colour change
Dark Orange 10% w/w absorption
Olive Green 15% w/w absorption
Dark Green 20% w/w adsorption

Bead Size

Less than 2 mm 5% maximum

Greater then 5 mm 5% maximum