Reference

Whatman

Equivalence

Weight

g/m²

Thickness

(µm)

Air permeability

mm H2O

Filtration’s speed

Micrometric retention

(µm)

Resistance wet state

kg/cm

210

5

100

200

650

slow

2 to 3

0,50

116

3

160

370

360

average

4 to 7

0,55

110

2 - 2V

100

200

300

average

6 to 10

0,40

108

1

85

200

220

fast

10 to 12

0,35

609

4

95

215

60

very fast

20 to 25

0,40

106

93

65

170

275

average

7 to 10

0,40

107

93

74

190

275

average

4 to 7

0,40

307

91

75

240

90

fast

8 to 10

0,42

613

113 – 113V

130

430

90

very fast

20

0,40

607

114 – 114V

75

200

80

very fast

25

0,40