dense (1)
Fast filtering (44)
Fast filtering, wide-pore (1)
Fine-pore (1)
Fine-pore, dense, very slow filtering (41)
Medium dense, medium fast filtering (111)
Medium fast filtering (160)
medium fast filtering (1)
Medium fast filtering, low ammonium, potassium & sodium content (24)
Medium fast to slow filtering (5)
Medium fast to slow filtering, narrow-pore (16)
Medium- to wide-pore (1)
Medium- to wide-pore, medium fast filtering (54)
Medium-fast rate of filtration (1)
Medium-fast rate of filtration, medium-wide-pored, wet strength (1)
Narrow-pore, dense, slow filtering (42)
Pleated papers, grey, 2000 x 110 mm (1)
Pleated papers, white, 2000 x 110 mm (1)
Polyethylene coated paper, absorption : 150 % (7)
Polyethylene coated paper, absorption : 350 % (1)
Smooth, blue paper (1)
Smooth, yellow paper (1)
Very fast filtering (6)
Very fast filtering, wide-pore (48)
Very fine-pore, very dense, very slow filtering (33)
very slow filtering (1)
White paper made of cellulose and kieselguhr with a slow rate of filtration (10)
Wide-pore, loose structure, fast filtering (52)