CHM® STF syringe filters are indicated to clean small volume samples for HPLC or GC analysis, where higher chemical resistance is required than offered by CHM® SRC (Regenerated cellulose).
They are supplied in two pore sizes, 0.2 and 0.45 µm, and in three diameters 4, 13 and 25 mm.
The choice of diameter depends on the volume to be filtered:
vol. <1 ml - Ø 4 mm
vol. <5 ml - Ø 13 mm
vol. <100 ml - Ø 25 mm
Features:
· Hydrophobic
· High chemical resistance to most solvents and acids
· Up to 100 ml sample
· Autoclaved
Applications:
· Filtration of strong acids and aggressive solutions
· Cleaning of small volume samples for HPLC or GC application which require greater chemical resistance than regenerated cellulose syringe filters.
· Venting applications
· Degassing solvents
· Phase separation
| FILTER DIAMETER | 4 mm | 4 mm | 13 mm | 13 mm | 25 mm | 25 mm |
| Pore | 0.20 μm | 0,45 μm | 0,2 μm | 0,45 μm | 0,2 μm | 0,45 μm |
| Bubble point (water) | > 1.4 bar (0.2 μm) |
| | > 0.9 bar (0.45 μm) |
| Filtration area | 0.07 cm2 | 0.07 cm2 | 1,7 cm2 | 1,7 cm2 | 4,8 cm2 | 4,8 cm2 |
| Flow rates | а) for ethanol |
| Typical values at 1 bar (100 kPa) | | 2.0 ml/min | 25 ml/min | 65 ml/min | 70 ml/min | 130 ml/min |
| Differential pressure | b) for methanol |
| | | 4.5 ml/min | 55 ml/min | 105 ml/min | 160 ml/min | 260 ml/min |
| | c) for air |
| | | 0.06 ml/min | 0,5 ml/min | 1,1 ml/min | 1,7 ml/min | 2,2 ml/min |
| Limits for use | Max. operating pressure: 4.5 bar (450 kPa) |
| Burst pressure: 6 bar (600 kPa) |
| Max. Temperature 121 ºC, 30 min (autoclave) |
| Wetting water penetration pressure | 4 bar (400kPa) | 3 bar (300 kPa) | 4 bar (400 kPa) | 3 bar (300 kPa) | 4 bar (400kPa) | 3 bar (300 кПа) |
| Materials | Regenerated cellulose membrane. |
| Polypropylene housing | |
| Connectors | Female Luer lock inlet, Luer Slip outlet |
| Order information |
| ORDER NUMBER | PORE SIZE (μm) | DIAMETER (mm) | STERILE | QUANTITY/BOX |
| STF020004H | 0,2 | 4 | NO | 100 |
| STF020004Q | 0,2 | 4 | NO | 500 |
| STF020013H | 0,2 | 13 | NO | 100 |
| STF020013Q | 0,2 | 13 | NO | 500 |
| STF020025H | 0,2 | 25 | NO | 100 |
| STF020025Q | 0,2 | 25 | NO | 500 |
| STF045004H | 0,45 | 4 | NO | 100 |
| STF045004Q | 0,45 | 4 | NO | 500 |
| STF045013H | 0,45 | 13 | NO | 100 |
| STF045013Q | 0,45 | 13 | NO | 500 |
| STF045025H | 0,45 | 25 | NO | 100 |
| STF045025Q | 0,45 | 25 | NO | 500 |
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To get information about: «STF PTFE syringe filters» contact us by phone (044) 229 15 31 or fill in the form.