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Finneran Syringe Filters

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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.


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