At Analytics Shop you will find a large selection of filtration products for HPLC sample preparation from Merck Millipore, such as membrane filters and syringe filters. We offer a broad variety of different high quality filter membranes such as Merck Millipore millex syringe filters and ominpore or isopore membrane filters. Material, diameter and pore size can be selected through a drop-down menu on the left hand side.
If you need any help in selecting our products, please feel free to contact us. We will help you to find the right filter for your personal laboratory needs.
Here you can find more information about Merck Millipore filters.
Membrane filter of different materials have specific properties. Therefore, the choice of the correct filter depends greatly on the chemicals used.
The following table gives an overview of application areas and chemical resistence of each polymer.
Material | Retention Characteristics |
---|---|
Celluloseacetate (CA) | Low protein-binding, well suited for sterile filtration and clarification of aqueous solutions, nutrient media, buffers, and sera, they provide superior chemical resistance to alcohol and oil. These hydrophilic membranes offer excellent flow rates as well as thermal stability up to 180°C max. |
Cellulosenitrate (CN) | Cellulose nitrate membranes set the standard in both analytical and microbiological filtration. Cellulose nitrate is available in a range of pore sizes and is well suited for microbial analysis in water, food and beverage applications. Available in dispenser strips or individually sealed. |
Polyamide (PA) | Membranes are hydrophilic and are widely used in both aqueous and organic solvent filtration applications. Well suited for sterilization and clarification of buffers and nutrient media with a low level of extractables. |
Polycarbonate (PC) | PC membranes have uniform, smooth-bore, round pores that pass straight through the membrane creating a precise capillary structure. The smooth, flat surface of the PC membrane offers high visibility of captured particles. |
Polytetrafluorethylen (PTFE) | Permanently hydrophobic filter material, very suitable for air and gas filtration. PTFE membranes are extremely resistant to aggressive solvents and acids and can be used to filter particulate from both liquid and gas samples. |
Regenerated Cellulose (RC) | Regenerated cellulose membranes are resistant to solvents and are hydrophilic. 0.45 μm pore size is typically used for HPLC sample preparation. |