GH Polypro (GHP) Membrane Disc Filters All purpose, universal membrane with maximum chemical compatibility for both aqueous solutions and aggressive solvents Specifications Filter Media Hydrophilic polypropylene Pore Size 0.2 and 0.45 µm Typical Thickness 0.2 µm: 101 µm (4.0 mils) 0.45 µm: 114 µm (4.5 mils) Typical Water Flow Rate mL/min

Hold-Up Maximum Maximum Typical Part Pore Volume Operating Operating Water Number Description Size (w/air purge) Temperature Pressure Flow Rate AP-4305 GxF/GHP 0.2 µm < 200 µL 55 °C (131 °F) at 2.1 bar 4.1 bar (410 kPa, 60 psi) 175 mL/min at 2.1 bar AP-4307 (210 kPa, 30 psi) at 21-24 °C (70-75 °F) (210 kPa, 30 psi) AP-4306

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Feb 24, 2014 · Thus, the hold-up volume (time) is equal to the retention volume (time) of an unretained compound. The hold-up volume (time) includes any volumes contributed by the sample injector, the detector, and connectors. tM = VM Fc In gas. this term is also called the gas hold-up volume (time). The corrected gas hold-up volume ( Vo M) is the gas hold-up

13mm ghp membrane lower hold-up volume PTFE Syringe Filters – Non-Sterile Syringe Filters – Pall 0.2 µm. Diameter (Metric) 13 mm. Effective Filtration Area (Metric) 1 cm².

The 25 mm Acrodisc is recommended for sample volumes from 5 to 100 mL. The 13 mm size is recommended for samples under 10 mL in volume. The 4 mm size is for samples under 2 mL. PP housing with Luer fittings. GHP - hydrophilic PP membrane suitable for both aqueous and organic samples; GXF - multi-layered glass fiber prefilter

4.5.5 Column Hold-Up Volume. The system hold-up volume is defined as the volume of mobile phase contained within the chromatographic system between the injector and the detector [690]. It can be determined by the elution volume of an unretained and unexcluded solute. The column hold-up volume is equivalent to the system hold-up volume less the

Another aspect of choosing the right filter size is the hold-up volume. This is the volume of liquid remaining in the filter after use. A filter with a low hold-up volume is recommended for use with expensive fluids or those with limited availability. Here are examples of the hold-up volumes of Pall’s non-sterile syringe filter range:

Pall Laboratory. of filter media: hydrophilic nylon membrane for excellent chemical compatibility with esters, bases, and alcohols, without pre-wetting; GHP (hydrophilic polypropylene) membrane for low protein binding; and hydrophilic PVDF (polyvinylidine fluoride) membrane for use in aqueous and non-aggressive,. Compare this item.

Upper Housing, Lower Reservoir: Polypropylene Membrane: GH Polypro (hydrophilic polypropylene) Pore Size 0.45 µm Effective Filtration Area 0.28 cm2 Dimensions Overall Length (fully assembled with cap): 4.5 cm (1.8 in.) Capacities Sample Volume: 50 - 500 µL Filtrate Receiver Volume: 500 µL Hold-up Volume (membrane/support): . 2 µL

25mm ghp acrodisc lower hold-up volume Pall Acrodisc Syringe Filters, 25mm, Pall Life Sciences 4219 Pall Acrodisc Syringe Filters, 25mm, Pall Life Sciences Ptfe Membrane is a reliable and dependable addition to the Pall Filters family of products.

The GH Polypro hydrophilic polypropylene membrane is ideal for aqueous solutions and offers maximum chemical compatibility for aggressive solvents. 96.5% protein recovery. GH Polypro membrane is a low protein binding membrane. It removes unwanted particulate from samples with high recovery of critical proteins.

Syringe filter, low hold up volume; find -F4898 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich

A hefty percentage of the upstream volume can be collected from the process. Downstream hold up volume is harder to recover. One of the conventional ways is to drip it out from the filter outlet. International Filter products offers filters with low retention rates that reduces the hold-up volume significantly.