Quantity: 2 packs (total including 200 pieces of paper)
Description of the speed:
High Speed:
pore diameter: 80-120 µm
Filtration speed: no more than 35 seconds
ash content: 0.15%
quantify: 80+ - 4 g/m2
Average speed:
pore diameter: 30-50 µm
filtration rate: 35s-70s
ash content: 0.15%
quantify: 80+ - 4 g/m2
Low Speed:
pore diameter: 1-3um
filtration rate: 70s-140s
ash content: 0.15%
quantify: 80+ - 4 g/m2