Product Description
Filter Paper Grade 4
Available Sizes:
- Circles: 27 mm to 400 mm (available prepleated)
- Sheets: 38 x 114 mm to 580 x 580 mm
Properties
- Particle retention1: 25µm
- Nominal thickness: 210 µm
- Nominal basis weight: 92 g/m2
- Nominal ash content2: 0.06%
Applications
Grade 4 is a fast filter material that is well suited for retention of coarse particles and gelatinous precipitates, such as ferric hydroxide and aluminum hydroxide. Specific applications include:
- Air pollution monitoring where the collection of fine particles is not critical
- Routine clean-up of biological fluids or organic extracts
