Recommended for Soxhlet extraction with solvents, which are incompatible with cellulose fibres and for filtration of air and gas streams.

• Made of 100 % pure borosilicate fibres, without binding elements
• High loading capacity and highly permeable to air
• Thickness is 1.5 mm (diameter < 33 mm)
• High retention of small particles, > 99 % according to BS 4400
• Good stability at high temperatures up to 500 °C
• Recommended for hot, moist, and acidic gases
• Gravimetric determination of particles in hot gases