 Whatman GD/XP disposables syringe filters are ideal for use with samples that require inorganic ion analysis, as levels of ion extractables are minimized. They are also an alternative choice for users requiring a filter that exhibits extremely low protein binding characteristics.
GD/XP syringe filters contain a two layer prefilter stack comprised of 20 µm and 5 µm polypropylene filters. The last stage of filtration is a choice of membrane, which is positioned below the prefilter stack.
Applications
- HPLC sample preparation
- Trace metal analysis
Safety
High pressures can be obtained when using syringes. The smaller the syringe the higher the pressure that can be generated. As a general guide, the following pressures can be obtained by hand with the syringes indicated: 20mL- 30 psi; 10mL- 50 psi; 5mL- 75 psi; 3mL- 100 psi; 1m- 150 psi. Each user should determine the pressure they can generate by hand with a specific size syringe and take appropriate safety precautions not to exceed the recommended rating for the device used. If these limitations are exceeded, bursting of the device may occur.
Typical Data
|
GD/XP 25 mm |
Housing |
Polypropylene (pigment free) |
Filtration Area |
4.6 cm2 |
Maximum Pressure |
75 psi |
Volume ‘Hold Up’ full housing |
1.4 mL |
|
with air purge 250 µL (approx) |
Dimensions |
21.7 mm x 29.7 mm |
Weight |
3 g (approx) |
Flow Direction |
Flow should enter from the inlet |
Inlet Connection |
Female luer lock |
Outlet Connection |
Male slip luer |
Sterilization |
Autoclave at 121ºC (131ºC max) |
|
at 15 psi for 20 minutes† |
Biosafe |
All materials pass USP Class VI |
Prefiltration Media |
PP 20 µm : 5 µm |
Ordering Information - GD/XP Syringe Filters
Catalogue Number |
Membrane |
Pore Size (µm) |
Diameter (mm) |
Hydrophilic |
Solvent Resistance |
Quantity/Pack |
W-6970-2504 |
Nylon |
0.45 |
25 |
Yes |
Good |
150 |
W-6971-2504 |
Nylon |
0.45 |
25 |
Yes |
Good |
1500 |
W-6972-2504 |
PVDF |
0.45 |
25 |
Yes |
Good |
150 |
W-6973-2504 |
PVDF |
0.45 |
25 |
Yes |
Good |
1500 |
W-6974-2504 |
PTFE |
0.45 |
25 |
No |
Very Good |
150 |
W-6978-2504 |
Polypropylene |
0.45 |
25 |
No |
Good |
150 |
W-6993-2504 |
DpPP |
0.45 |
25 |
No |
Good |
1500 |
W-6994-2504 |
PES |
0.45 |
25 |
Yes |
Poor |
150 |
W-6995-2504 |
PES |
0.45 |
25 |
Yes |
Poor |
1500 |
|
