whatman ptfe针头滤器6784-2504 6784-1302puradisc™ 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.
features and benefits
- 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 syringe filters
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)
applications
- 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 syringe filters
with tube tip
puradisc 13
features
- 13 mm diameter syringe filter
- sample volume up to 10 ml
- low hold-up volume < 25 µl ensures maximum sample recovery
- glass microfiber option available
- tube-tip format (optional)
applications
- biological sample preparation
- hplc sample preparation
puradisc 25 syringe filters
puradisc 25
features
- 25 mm diameter syringe filter
- sample volume up to 100 ml
- low hold-up volumes for maximum sample recovery
- glass microfiber option available
applications
- hplc aqueous sample preparation
- biological sample preparation
- buffer solutions
- salt solutions
- tissue culture media
- irrigation solutions
- sterile isolation
puradisc 30 syringe filter
puradisc 30
features
- 30 mm diameter
- larger filtration area (44% greater in comparison with 25 mm)
- designed for aqueous samples
applications
- filtration of protein-containing solutions with minimal protein loss (ca membrane)embrane)
- removal of cellular constituents from solution
puradisc aqua 30
specifically designed for filtration of environmental samples prior to cod and doc analysis. the membranes used in these devices are prewashed prior to assembly so as to reduce the organic carbon level.
| typical data - puradisc syringe filters filters |
| |
puradisc 4 |
puradisc 13 |
puradisc 25 |
puradisc 30/aqua 30 |
| housing |
polypropylene |
polypropylene |
polypropylene |
polycarbonate |
| filtration area |
0.2 cm2 |
1.3 cm2 |
4.2 cm2 |
5.7 cm2 |
| maximum pressure |
5.2 bar (75 psi) |
5.2 bar (75 psi) |
5.2 bar (75 psi) |
6.9 bar (100 psi) |
volume 'hold up' full housing
with air purge |
< 10 µl |
< 25 µl |
< 100 µl |
< 50 µl |
| dimensionsmensions |
10.1 x 23.5 mm |
16.3 x 19.8 mm |
22.9 x 28.4 mm |
26 x 34 mm |
| weight |
0.55 g |
0.95 g |
2.7 g |
4.7 g |
| volume throughput |
up to 2 ml |
up to 10 ml |
up to 100 ml |
up to 100 ml |
| inlet connection |
female luer lockuer lock |
female luer lock |
female luer lock |
female luer lock |
| outlet connection |
male luerale luer |
male luer |
male luer |
male luer |
| sterlization |
autoclave at 121ºc (131ºc max) |
autoclave at 121ºc (131ºc max) |
autoclave at 121ºc (131ºc max) |
autoclave at 121ºc (131ºc max) |