Puradisc syringe filters combine premium quality and economy. They are ideal for the quick, efficient filtration of samples up to 100 mL volume.

Puradisc filters are produced from pigment-free polypropylene or polycarbonate with standard inlet (female luer lock) and outlet (male luer) connections (unless otherwise stated). Options include a sterile, medical-grade blister pack for critical applications and a special tube tip outlet that allows the sample to be accurately dispensed into a micro-vial, eliminating air lock.

• Pigment-free polypropylene (polycarbonate for Puradisc 30 and Aqua 30)
• Standard inlet and outlet luer connectors
• Optional sterile, medical-grade blister pack
• Tube-tip format (optional) for accurate dispensing into a micro-vial
• Choice of membrane or glass microfiber filter media
• Choice of filter sizes (4 mm, 13 mm or 30 mm) to minimize sample loss
• Sterile option for critical applications
• Wide range of membranes

Puradisc 4

Features

4 mm diameter syringe filter Sample volume up to 2 mL Low hold-up volume <10 µL ensures maximum sample recovery Tube-tip format (optional)

Puradisc 4 may be used for:

HPLC samples containing low solid content – filtration will improve column life CE (Capillary Electrophoresis) samples – filtration will eliminate spurious peaks Sterile filtration of low volume samples UV/Vis samples – filter directly into cuvette using tube tip Refractometry – filter samples to prevent damage to instrument optics and improve accuracy of results Minimizing non-specific binding to membrane (due to small membrane size)

Puradisc 13

Features

13 mm diameter syringe filter Sample volume up to 10 mL Low hold-up volume <25 µL ensures maximum sample recovery Optional glass microfiber Tube-tip format (optional)

Puradisc 13 may be used for:

Biological sample preparation HPLC sample preparation

Puradisc 25

Features

25 mm diameter syringe filter Sample volume up to 100 mL Low hold-up volumes for maximum sample recovery Optional glass microfiber

Puradisc 25 may be used for:

HPLC aqueous sample preparation Biological sample preparation Buffer solutions Salt solutions Tissue culture media Irrigation solutions Sterile isolation

Puradisc 30

Features

30 mm diameter Larger filtration area (44% greater in comparison with 25 mm) Designed for aqueous samples

Puradisc 30 may be used for:

Filtration of protein-containing solutions with minimal protein loss (CA membrane) Removal of cellular constituents from solution

Puradisc Aqua 30

Specifically designed for filtration of environmental samples prior to COD and DOC analysis. The membrane used in these filters are prewashed prior to assembly of the filters so as to reduce the organic carbon level.