£177.00 excl. VAT
£212.40 inc. VAT
GD/X range is specifically designed for high particulate loaded samples. Constructed of a pigment-free polypropylene housing with a prefiltration stack of Whatman GMF 150 (graded density) and GF/F glass microfiber media, these filters eliminate sample contamination and allow you to filter even the most difficult samples with less hand pressure. GD/X syringe filters can process three to seven times more sample volume than standard syringe filters.
GMF 150 and GF/F are produced from 100% borosilicate glass microfiber. The innovative, graded density GMF 150 medium has a coarse top layer meshed with a fine bottom layer that retains particles to 1.0 µm. A GF/F filter then retains particles down to 0.7 µm. The prefilter stack ends with a final membrane.
GD/X filter construction facilitates exceptional loading capacity with fast flow rates. This prevents the build up of back pressure typically caused by the blocking of an unprotected membrane.
Benefits
Applications
GD/X syringe filters are ideal for heavily particulate-laden samples found in;
Typical Data
GD/X 13mm
GD/X 25mm
Housing
Polypropylene (pigment free)
Polypropylene (pigment free)
Filtration area
1.3 cm2
4.6 cm2
Maximum pressure
6.9 bar (100 psi)
5.2 bar (75 psi)
Volume 'Hold Up' - Full housing
- with air purge
0.5 ml
50 µl (approx)
1.4 ml
250 µl (approx)
Dimensions
21.6 x 29.8 mm
20.8 x 29.8 mm
Weight
3 g (approx)
3 g (approx)
Flow direction
Flow should enter from the inlet
Flow should enter from the inlet
Inlet connection
Female luer lock
Female luer lock
Outlet connection
Male luer
Male luer
Sterlization
Autoclave at 121ºC (131ºC max) at 1 bar (15 psi) for 20 minutes
Autoclave at 121ºC (131ºC max) at 1 bar (15 psi) for 20 minutes
Glass microfiber prefiltration media
100% Borosilicate Glass Fiber
GMF 150 10 µm: 1 µm
GF/F 0.7 µm
100% Borosilicate Glass Fiber
GMF 150 10 µm: 1 µm
GF/F 0.7 µm
Identifying the filter material most suitable for your application based upon the nature of the liquid or gas you are filtering will ensure the best performance of your filter. Each syringe filter contains a membrane filter of a set diameter and plastic housing with luer connections used for connecting to syringes (or in-line hosing systems).
The membrane filter material has differing chemical and physical properties such as hydrophobicity, flow rate, extractables and protein retention making them suited to differing applications. Once you have selected the most compatible filter material, you will need to consider what pore size is most appropriate for your application and what diameter filter is suitable for your sample volume.
| Membrane Material | Protein binding | Hydrophilic/Hydrophobic | Chemical resistance | Applications |
| Hydrophilic PTFE | Low | Hydrophilic | High | Purification of HPLC organic and solvent/aqueous solutions |
| Hydrophobic PTFE | Low | Hydrophobic | High | Filtration of solvents |
| PES | Low | Hydrophilic | Low/Medium | Purification of tissue culture solutions, buffers |
| PVDF | Low | Hydrophilic | Medium | Filtration of protein solutions |
| NYL | Medium | Hydrophilic | Medium | Filtration of aqueous and solvent/aqueous mixtures |
| CA | Low | Hydrophilic | Low | Filtration of protein solutions |
| CN | High | Hydrophilic | Low | Filtration of aqueous solutions where protein binding is not a concern and microbioloigical applications. |
| RC | Low | Hydrophilic | Medium | Filtration of aqueous and organic solvents and protein recovery applications. |
High particulate loaded samples with tend to block the pores in the membrane more quickly so the total volume you can filter through a certain diameter syringe filter will vary greatly. Please take the below figures as a guide only.
For samples that are very particle ladden, it is recommened that you try pre-filtering your sample. Pre-filtering can be achieved with a number of different filters, such as glass microfibre. Some syringe filters come with an in-built pre-filter.
Products in this Range
