Table 1 The standard of air filter.

From: High emission reduction performance of a novel organic-inorganic composite filters containing sepiolite mineral nanofibers

Index name

Unit

Standard value

Quantity

g/m2

130 ± 10

Thickness

mm

0.4–0.6

Permeability (Δ = 200 Pa)

L/(m2·s)

≥260

Bursting strength

kPa

≥250

Maximum pore size

μm

≤80

Average pore size

μm

≤70

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