The housing material of the needle filter is made of high-quality sanitary polypropylene material. The product structure is precisely designed to ensure smooth filtration, the internal space is rationalized, and the residual rate is very low, thereby reducing Eliminate sample waste. Needle filter membrane The manufacturer will show you how to choose filter membrane materials.
Several key parameters of filter membrane and needle filter. Choose materials: such as nylon, polyethersulfone, and polytetrafluoroethylene. Pore diameter: such as 0.22μm, 0.45μm, diameter: such as 13mm, 25mm.
When selecting a filter membrane, you need to first consider chemical compatibility, that is, whether the filter membrane is resistant to acids, alkalis, organic solvents, etc. Filter sample properties. Hydrophilic samples: It is suitable to use hydrophilic membranes, which are suitable for filtering solutions with water as the matrix. For example, for tap water and surface water, the available filter membranes are water-based membranes (mixed cellulose ester) and nylon membranes (polyamide). Nylon membrane (polyamide) is suitable for samples of organic and inorganic compounds (alcohols, esters, oils). Protein solution samples: suitable for low protein adsorption filter membrane, that is, PVDF membrane. Strong acid and alkali samples are suitable for hydrophobic PTFE (polytetrafluoroethylene membrane).
The commonly used microporous filter membrane is generally a disc filter membrane, such as a 25mm disc microporous filter membrane, which can be used with a syringe filter connected to a syringe. The 47mm disc microporous filter membrane can be used with membrane-changing filters, Buchner funnels, pressure vessels, etc. with vacuum pumps and pressure pumps. There are also microporous filter membranes with larger diameters, which also require corresponding clamps and pressure. Other microporous filter membranes can be selected according to needs.
Needle filter membrane is a good filter membrane choice for syringe filters. The film is biaxially stretched vertically and horizontally. It is a new material that is acid and alkali resistant and resistant to various organic solvents. It is almost insoluble in all solvents. It has wide chemical applicability and can be provided in both hydrophilic and hydrophobic categories. The pore size is 0.1μm-1μm. It has high filtration accuracy and can intercept various phages, small bacteria and particles above 0.02μm. Needle filter membrane is widely used in air filtration, organic solvent filtration, fermentation and other fields. Interested parties can enter the store for consultation.
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