Our hydrophilic PES membranes have a particularly high density of pores. As a result, they achieve an outstanding flow rate of aqueous solutions. In addition, their polymeric fiber material allows a high mechanical strength in end devices. With their asymmetric membrane structure, i.e. larger pore openings at the inlet surface and a narrowing of the pore diameter towards the bottom of the membrane, they have a clear advantage over the usual symmetric pore structure.
Their low non-specific protein binding makes them suitable for filtering biological and pharmaceutical solutions without any effects on the ingredients, due to adsorption or decomposition.
Their low level of extractables prevents contamination of culture media, preparations of drugs, pharmaceuticals or infusion solutions. In addition, they pass the strict test for biocompatibility and cytotoxicity according to USP Standards.
|Pore size µm||Thickness* mm||Flow rate** [ml/min]||Bubble Point*** [Bar]|
|0.2||approx. 110||> 21||3.6|
|0.45||approx. 110||> 50||2.7|
* Acc. DIN 53105
** Acc. DIN 58355 average value per cm 2 area at Δ p = 1 bar with water
*** lt. DIN 58355 with water Note: The membrane discs packed in the Hahnemühle product box present the larger pores at the top, when you open the box.
This side shall be the side to applicate the sample for filtration. Please check before use!
The glossy surface with the closer pores is the lower.
|Reference number||Pore size (µm)||Diameter||Units/box|
|PES02025BL||0.2 μm||25 mm||100|
|PES02047BL||0.2 µm||47 mm||100|
|PES02050BL||0.2 µm||50 mm||100|
|PES020142BL||0.2 µm||142 mm||25|
|PES04525BL||0.45 µm||25 mm||100|
|PES04547BL||0.45 µm||47 mm||100|
|PES04550BL||0.45 µm||50 mm||100|
|PES045142BL||0.45 µm||142 mm||25|