Waters offers Pall Life Sciences laboratory filters for sample and solvent filtration, including:
A wide selection of membrane types and pore sizes to deliver the right lab filter for any sample type, and a broad range of device sizes to ensure complete sample filtration with minimal sample loss.
Pall Laboratory products are designed for laboratory applications only. These products are not approved for use in medical, clinical, surgical, or other patient applications. If you require further assistance in product selection for your chosen application, please contact Waters.
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Filter DesignPall Life Sciences' broad range of device sizes assures complete sample filtration with minimal sample loss. In addition, many Acrodisc Syringe Filters offer the option of a minispike outlet, rather than the traditional male luer outlet. The minispike outlet, available on 13 mm PTFE, Nylon, GH Polypro, and PVDF Acrodisc Syringe Filters, allows for easy dispensing into autosampler vials. |
Typically, the first step in selecting a suitable filter is to choose a membrane that is chemically compatible with the sample (see table below for a full selection of mebranes). For aqueous samples, it is preferable to use a hydrophilic membrane (wwPTFE, PVDF, or Nylon) versus a hydrophobic membrane (PTFE). With proteinaceous samples, a low protein binding filter (wwPTFE or PVDF) is preferable to other hydrophilic filters (Nylon).
wwPTFE (Water Wettable Polytetrafluoroethylene)The wwPTFE membrane is ideal for sample preparation and solvent filtration.
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MS wwPTFE (Water Wettable Polytetrafluoroethylene)
LC-MS certified filter with extremely low levels of extractables
LC-MS certified
Low ion suppression/enhancement
Protective packaging design
Excellent chemical resistance
Low protein binding
Particulate retention
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Nylon Acrodiscs
Acrodisc LC (PVDF)
Acrodisc CR (PTFE)
Ion Chromatography (IC) Acrodiscs
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wwPTFE Acrodisc GxF, Acrodisc GF, and Nylon Acrodisc GF
Glass Fiber Acrodiscs
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Pore Size (0.2 and 0.45 µm) — The filter pore size is usually a personal preference of the chromatographer but relates to the column packing material. Since there are many different packing materials, a general guideline is that most customers find that the 0.45 µm filter meets their requirements, although chromatographers are increasingly moving toward using 0.2 µm filters. |