lulose membrane specially designed for “sticky” samples. This membrane has ultimate recovery at low adsorption (95 to 98%) and very small hold up volume (<20 µL). Ideal for desalting and concentration of Ig fractions.

For reliable concentration and desalting of 50 to 500µL samples with recoveries greater than 90%. Nanosep features low protein-binding Omega membrane (modified polyethersulfone on polyethylene substrate); Nanosep MF is offered with either a Bio-Inert nylon membrane or a GH Polypro (hydrophilic polypropylene) membrane.

polypropylene housing ghp membrane lower hold-up volume . 0.45um GHP hydrophilic polypropylene membrane for chemical compatibility fast flow rates low protein binding low levels of UV-absorbing extractables. HPLC and Chromatography Sample Prep - VWR. A filter with a low hold-up volume is recommended for Low protein binding membrane GHP Membrane is Extremely Low in Biomolecule Binding.

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/cm2at 0.7 bar (70 kPa, 10 psi) 0.2 µm: 20 0.45 µm: 31 Maximum Operating Temperature 55 °C (131 °F) Minimum Bubble Point - Water 0.2 µm: 2.9 bar

The wwPTFE membrane is ideal for sample preparation and solvent filtration. Extend column life up to 52x. Improve result quality with up to 24% less filter extractables and lower adsorption. Use one membrane filter type for all your sample preparation applications. Hydrophilic wwPTFE membrane also available in two LCMS-certified configurations.

, since it only requires 57% of the membrane area used at the lower feed flow rate at almost the identical pump feed rate. Note: • Anticipated final volume of over-concentrated product must exceed minimum working volume of membrane system at selected feed flow rate (Q F); avoid introduction of air and maintain uniform mixing at end of volume

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:

and GH Polypro (GHP, hydrophilic polypropylene) membranes Sample Reservoir, Membrane Support Base, and Filtrate Receiver: Polypropylene Effective Filtration Area 0.3 crnz Dimensions Overall Length (Fully Assembled With cap): 4.5 cm (1.8 in.) Performance Capacities Maximum Sample Volume: 500 VL Final Concentrate Volume: 15

(GHP, hydrophilic polypropylene) membrane Filtrate Receiver: Polypropylene Effective Filtration Area 0.28 cm2 Centrifuge Fits rotors that accept 1.5 mL tubes Dimensions Overall Length (fully assembled with cap): 4.5 cm (1.77 in.) Capacities Maximum Sample Volume: 500 µL Final Concentrate Volume: 15 µL Filtrate Receiver Volume: 500 µL Hold-up

Pall 4567 Acrodisc Syringe Filters with GH Polypro Membrane . All membranes are HPLC certified for low levels of UV-absorbing extractables.Polypropylene housing has female Luer-lock inlet and minispike outlet. Typical hold-up volume: - 14µL." Product details Titan3™ PTFE (Hydrophilic) Syringe Filters

The GHP hydrophilic polypropylene (GH Polypro) membrane is ideal for maximum chemical compatibility, fast flow rates, low protein binding, and low levels of UV-absorbing extractables. The glass fiber membrane allows for quick and easy filtration for difficult-to-filter aqueous solutions.

Sample Reservoir, Membrane Support Base, and Filtrate Receiver: Polypropylene Effective Filtration Area 0.28 cm2 Dimensions Overall Length (fully assembled with cap): 4.5 cm (1.8 in.) Capacities Maximum Sample Volume: 500 µL Final Concentrate Volume: 15 µL Filtrate Receiver Volume: 500 µL Hold-up Volume (membrane/support): < 5 µL

Acid and base resistant. Wide chemical compatibility with solvents. Low hold up volume for maximum sample recovery. High throughput for viscous samples. Sample preparation for HPLC. Clarification of laboratory samples. Ideal for particulate removal prior to sample analysis (HPLC Upper Housing, Lower Reservoir: Polypropylene Membrane: GH Polypro

standard grade ghp membrane filter lower hold-up volume Product Introduction Hold Up Volume - Filter Capsules - International Filter Products 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.

GH Polypro (GHP) membrane disc filters 176 •• • • are certified to be low in UV extractables. Low hold-up volume (< 5 µL) makes these devices ideal