These filters syringe filter containing a cellulose acetate or polyamide (nylon) membrane of 0.22 microns or 0.45 microns, along with a glass microfiber pre-filter with retention of 0.7 microns particles. This depth pre-filter prevents premature clogging of the final membrane. They are particularly suitable for filtration and sterilization especially difficult samples with high solids loading, or high power silting deformable.
Supplied in diameter 25 mm in non-sterile format.

Bubble point with water (minimum value)
Cellulose acetate
Pre filter + 0.22 µm 3.5 bar | 350 Kpa
Pre filter + 0.45 µm 1.6 bar | 160 Kpa
Polyamide (nylon)
Pre filter + 0.22 µm 2.8 bar | 280 Kpa
Pre filter + 0.45 µm 1.8 bar | 180 Kpa
Flow rate with water (ml/min /cm2)p=0.7 bar | 70 Kpa aprox.:
Cellulose acetate
Pre filter + 0.22 µm 10 ml/min/cm2 Pre filter + 0.45 µm 20 ml/min/cm2

Polyamide (nylon)
Pre filter + 0.22 µm 2.5 ml/min/cm2 Pre filter + 0.45 µm 8.0 ml/min/cm2

Materials
Pre filter: Glass microfiber filters with binders
Membrane: Cellulose acetate or polyamide (nylon)
Housing: Polypropylene (PP)
Diameter: 25 mm.
Filtration area 2,98 cm2

Maximum temperature of use
Cellulose acetat e≤ 50ºC
Polyamide (nylon) ≤ 100ºC
Maximum pressure of work: 8.7 psi
Connectors
Input: Female luer lock
Output: Male luer slip
Hold-up volume
25 mm diameter: < 30 µl
Extractables with water < 0.2%
Chemical compatibility:
Cellulose acetate: 4 – 8 pH
Polyamide (nylon): 3- 12 pH
Reaction to water: hydrophilic