Our syringe filters are made using polypropylene medical-grade housings with Luer-Lock and Luer-Slip fittings in compliance with ISO 594-1. Each filter is sealed, using an external ring insert, to maintain the membrane integrity and best performance. Filters are color-coded for easy identification.
The Certified Filters are supplied with a Certificate of Quality, batch-to-batch, to guarantee product performance and quality. The filters are visually inspected following quality specifications. Each batch of filters is tested for external dimensions, bubble point, filter integrity, water flow rate, UV extractable, and compliance with all technical procedures, manufacturing specifications, and quality controls for release. Tests are performed by an independent laboratory.
General Specifications Syringe filters are available in two sizes (13 and 25 mm Ø) with a variety of membranes.
Filter size
Sample volume size (*)
Hold- up volume (after air purge)
Filtration area
Max. operating pressure
External dimensions
Weight
13 mm
1-10 mL
< 30 µL
0.95 cm2
750 kPa
16.2±0.3mmØ x 19.0±0.3mm
0.90±0.10 g
13 mm PF
1-5 mL
< 25 µL
0.95 cm2
750 kPa
16.2±0.3mmØ x 17.3±0.3mm
0.80±0.10 g
25 mm
>10 mL
< 120 µL
3.55 cm2
650 kPa
31.9±0.3mmØ x 25.7±0.3 mm
3.90±0.10 g
25 mm R
>10 mL
< 120 µL
3.55 cm2
650 kPa
30.0±0.3mmØ x 21.5±0.3 mm
3.90±0.10 g
25 mm A
>10 mL
<150 µL
3.55 cm2
650 kPa
30.0±0.3mmØ x 21.3±0.3 mm
2.90±0.10 g
(*) For critical applications using chromatography detection at < 210nm is recommended to reject the first filtrated ml.
Membrane selection In the selection of membrane for chromatography sample and solvent filtration, there are several important considerations:
The membrane must be highly solvent resistant, since most chromatography solvents are aggressive and sometimes corrosive.
It should not have extractables because they can interfere with analytical results.
It should be a low protein binding membrane for biological samples.
Special Formats Available Robot filters (low hold–up volume) designed for robotic devices (25mm R). Automatic filters (high stress resistance) available for automatic applications (25mm A). Mini-tip filters (for small quantities of analytical samples) (13mm PF) Connection Luer-lock full screw (available on 13mm Filters)
Traceability on Certified Filters Certified filters, with Traceability, are available on standard products. These filters have PRINTED, externally, a color-coded plastic ring with the BATCH NUMBER (i.e. LOT 123456). This batch number provides extended certification and traceable documentation in accordance with ISO protocol.
