Puradisc 4

• 4 mm diameter syringe lter

• Sample volume up to 2 ml

• Low hold-up volume < 10 μl ensures maximum sample recovery

• Minimized nonspeci c binding to membrane (due to small

  membrane size)

• 13 mm diameter syringe lter

• Sample volume up to 10 ml

• Low hold-up volume < 25 μl ensures maximum sample recovery

  Puradisc 25

• 25 mm diameter syringe lter

• Sample volume up to 100 ml

• 30 mm diameter

• Larger ltration area (44% greater in comparison to 25 mm)

• Designed for aqueous samples

  Puradisc FP 30 may be used for:

• Filtration of protein-containing solutions with minimal protein loss (CA membrane)

• Removal of cellular constituents from solution

These lters contain prewashed membrane to minimize background carbon levels in COD and DOC analysis.

Features and benefits

• Pigment-free polypropylene (or polycarbonate for Puradisc FP and Aqua 30)
• Choice of membrane or glass micro ber lter media for wide solvent compatibility
• Sterile option (blister pack) for critical applications
• Tube-tip format (optional) for accurate dispensing into a microvial
• Choice of lter sizes (4 to 30 mm)
• Standard inlet and outlet Luer connectors
• Adhesive-free seals eliminate potential sample contamination

Possible applications

• HPLC samples containing low solid content— ltration will improve column life
• CE (capillary electrophoresis) samples— ltration will eliminate spurious peaks
• Sterile ltration of low volume samples
• Biological sample preparation
• UV/Vis samples— lter directly into cuvette using tube tip
• Refractometry— lter samples to prevent damage to instrument optics and improve accuracy of results
• Buffer solutions
• Salt solutions
• Tissue culture media