VGKL Laboratory Catalogue Issue 15


Main -> Separating systems -> Filtration -> Syringe filters, filter holders

Syringe Filter, DIA-Nielsen

1 Syringe Filters DIAFIL CA

The cellulose acetate membrane is hydrophilic. Due to its low protein adsorption, filters with this membrane are frequently used for biological samples (e.g. enzyme solutions, biological macro-molecules). Other applications include the clear filtration and sterile filtration of aqueous solutions. The membrane also has high temperature stability.

Membrane Ø mm	Pore size µm	sterile	Order No.	PU pc/Pack
15	0.2		10 12 60151	100
15	0.45		10 12 60152	100
15	0.2	yes	10 12 60153	100
15	0.45	yes	10 12 60154	100
25	0.2		10 12 60251	100
25	0.45		10 12 60252	100
25	0.2	yes	10 12 60253	100
25	0.45	yes	10 12 60254	100
30	0.2		10 12 60301	100
30	0.45		10 12 60302	100

2 Syringe Filters DIAFIL RC

The regenerated cellulose membrane is, due to its low, unspecific adsorption characteristics for proteins, very suitable for biological solutions. Another range of applications lies, e.g. in the clearing and degassing of eluents for HPLC (Bubble point by request, depending on the type of membrane).
The membrane is highly resistant against aqueous and organic HPLC solvents; pH range 3-12.

Membrane Ø mm	Pore size µm	sterile	Order No.	PU pc/Pack
15	0.2		10 12 61153	100
15	0.45		10 12 61154	100
15	0.2	yes	10 12 61151	100
15	0.45	yes	10 12 61152	100
25	0.2		10 12 61251	100
25	0.45		10 12 61252	100
25	0.2	yes	10 12 61253	100
25	0.45	yes	10 12 61254	100
30	0.2		10 12 61301	100
30	0.45		10 12 61302	100

3 Syringe Filters DIAFIL PA

The polyamide (nylon) membrane is designed for the filtration of HPLC and GC solutions, but may also be utilized for the clearing and sterilization of alkaline solutions.
Nylon-membranes are both hydrophilic and inert relative to many organic solvents and alkaline solutions. This membrane is characterized by a high degree of mechanical strength. Do not autoclave this membrane!

Membrane Ø mm	Pore size µm	sterile	Order No.	PU pc/Pack
15	0.2		10 12 62151	100
15	0.45		10 12 62152	100
15	0.2	yes	10 12 62153	100
15	0.45	yes	10 12 62154	100
25	0.2		10 12 62251	100
25	0.45		10 12 62252	100
25	0.2	yes	10 12 62253	100
25	0.45	yes	10 12 62254	100
30	0.2		10 12 62301	100
30	0.45		10 12 62302	100

4 Syringe Filters DIAFIL PTFE

This polytetrafluorethylene membrane can be used for the filtration of aggressive chemicals, including acids and non-aqueous solutions, as well as for GC and HPLC sample preparation. Due to its low flow resistance relative to gases, the membrane is suitable for air and gas filtration operations (ventilation and degassing jobs).
PTFE membranes are very inert and hydrophobic (but can be made hydrophilic by wetting e.g. with ethanol).

Membrane Ø mm	Pore size µm	sterile	Order No.	PU pc/Pack
15	0.2		10 12 63151	100
15	0.45		10 12 63152	100
15	0.2	yes	10 12 63153	100
15	0.45	yes	10 12 63154	100
25	0.2		10 12 63251	100
25	0.45		10 12 63252	100
25	0.2	yes	10 12 63253	100
25	0.45	yes	10 12 63254	100
30	0.2		10 12 63301	100
30	0.45		10 12 63302	100

5 Syringe Filters DIAFIL PVDF

The Polyvinylidenefluoride membrane is often used for preparation of HPLC samples or for pharmaceutical applications. It has slight hydrophobic properties and can be used for clear filtration of partly organic or organic solvents. Because of its chemical compatibility it is less suitable for the filtration of aggressive media like strong acids, bases and ketones.

Membrane Ø mm	Pore size µm	sterile	Order No.	PU pc/Pack
15	0.2		10 12 64151	100
15	0.45		10 12 64152	100
15	0.2	yes	10 12 64153	100
15	0.45	yes	10 12 64154	100
25	0.2		10 12 64251	100
25	0.45		10 12 64252	100
25	0.2	yes	10 12 64253	100
25	0.45	yes	10 12 64254	100
30	0.2		10 12 64301	100
30	0.45		10 12 64302	100

6 Syringe Filters DIAFIL GF

The glass fiber fleece is suitable for pre-filtration or for operations with hard to filter substances. Due to its three-dimensional filtration surface it possesses a higher absorption capacity for contaminating particles. The glass fiber is inert against solvents, acids and bases.

Membrane Ø mm	Pore size µm	sterile	Order No.	PU pc/Pack
15	1-2		10 12 65151	100
15	1-2	yes	10 12 65152	100
25	1-2		10 12 65251	100
25	1-2	yes	10 12 65252	100
30	1-2		10 12 65301	100

The pictures to the right show product examples of the different filter types.