Ceramic Porous Filter Media (BPT)

Blue Porous Media

White Porous Media

Material

Fused Alumina

Aluminosilic ate

Chemical nature

Amphoteric

Amphoteric

AI2O3 content (typical)

82%

Bulk density (max)

2.3 gm/ cm3

2.2 gm/ cm3

Max use temperature

900 deg C

900 deg C

Oxidation/ Reduction effect

Nil

Nil

Reaction with acids

Mild attack by aqua regia/ or HF

Mild attack by aqua regia/ or HF

Reaction with Alkalise

Very slight with very strong hot solution

Very slight with very strong hot solution

Permeability

15-18 cfm/ft2/ inch flow of air at 75 deg F and 25% humidity

15-18 cfm/ft2/ inch flow of air at 75 deg F and 25% humidity

Porosity

30%-40%

25%-35%

Max Particle retention

>25

>25

Modulus of rupture

Dry

150 kgs/ cm2

90 kgs/ cm2

Wet

120 kgs/ cm2

75 kgs/ cm2

Resistance to heat

Excellent

Excellent