GE Whatman* Qualitative Filter Papers, Grade 4

Grade 4: 20 - 25 µm
Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Very useful as a rapid filter for routine cleanup of biological fluids or organic extracts during analysis.
Image(s) are representative of the product group and not necessarily the individual product.

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 11.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 12.5

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 15.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 18.5

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 24.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 27.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 32.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 4.25

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 4.7

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 40.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 5.5

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 7.0

Circles, Grade 4, 20 - 25 µm
Diameter (cm): 9.0

Sheets, Grade 4, 20 - 25 µm
Diameter (cm): 46 x 57