Technical Details:
Grade | Aquaperl |
Flow Rate (s) | 25 to 35 |
pH (in water) | 6 to 9 |
Bulk Density (kg/m3) | 110 to 145 |
Wet Cake Density (kg/m3) | 200 to 280 |
Permeability (Darcy) | 1.46 to 2.04 |
Floats <% | < 6 |
Average Particle Size (μm) | 78 |
Median Particle Size (μm) | 55 |
90% of Particles are Less than (μm) | 162 |
View the Technical Data Sheet for more details: Aquaperl_TDS
What is perlite?
Perlite is a generic name for a naturally occurring siliceous volcanic rock. A unique property of perlite is that it expands up to twenty times its original volume when it is heated to its softening range.
This expansion process is caused by the presence of water in the crude rock. When perlite ore is rapidly heated to above 850°C, this water vaporises and causes the softened rock to expand. Tiny glass-like bubbles are produced which account for the light weight and exceptional physical properties of expanded perlite.
It is these lightweight glass-like bubbles that are milled and classified under stringent quality controlled conditions to produce perlite filter aids. These perlite filter aids exhibit a unique, jagged interlocking structure with a myriad of microscopic channels affording optimum flow rates and clarities for a wide variety of applications.
Perlite filter aids do not impart taste, colour or odour to liquids being filtered and they are virtually insoluble in mineral and organic acids at all temperatures.
Perlite is an important filtration media used in the clarification of beverages including beer, wine and fruit juices and in swimming pool and other water filtration applications.
Physical Properties:
Grade | Aquaperl |
Colour | White |
Shape | Rounded / Angular |
Bulk Density (kg/m3) | 40 to 160 |
Moisture Loss at 110 °C (%) | 0.5 to 2 |
pH (in water) | 6 to 9 |
Combustibility | Non-combustible |
MOH Hardness | 1 to 2 |
Sintering Temperature (°C) | 1260 to 1340 |
Fusion (°C) | 1260 to 1340 |
Water Holding Capacity | By Weight: 220 to 325% By Volume: 20 to 50% |