First of all, the nylon membrane of disposable nylon syringe filters belongs to the general type of filter membrane and it is suitable for the filtration of most sample solutions and solvents. Moreover, the nylon membrane has high mechanical strength and stable chemical properties. It can be applied for the filtration of both organic solvents and aqueous solutions, so it is mostly used for filtration of samples and solvents in high performance liquid chromatography, gas chromatography and ion chromatography.
Secondly, the PES membrane belongs to hydrographic membrane. It has the advantages of low resistance, high filtration rate and less protein adsorption. In general, the PES membrane is suitable for the filtration of viscous biological and cell tissue samples. Besides, it has excellent permeability and is good for fast filtration of large-volume of aqueous solution samples, aqueous solvents and biological reagent.
Thirdly, the hydrophilic PVDF membrane belongs to hydrographic and organic general types of filter membrane. Disposable hydrophilic PVDF syringe filters is special for biological samples.
Fourthly, the PTFE membrane belongs to organic filter membrane. It is suitable for the filtration of organic solvent media samples including strong acid and strong alkali. Furthermore, it can be applied in extreme liquid and temperature conditions. Also, its hydrophobicity can be used for gas filtration or degassing filtration.
Generally, the disposable syringe filters are mainly applied in the filtration of mobile phase and samples in chromatographic analysis.
If there are impurities in the samples and solvents, they can not only damage the chromatography instruments, but will also greatly affect the analysis results. The disposable syringe filters play a very important role in preventing the chromatographic columns and systems from being polluted. At the same time, they can improve the sensitivity and accuracy of the analysis results. Also, the disposable syringe filters are widely used in pharmaceutical analysis, food detection, environmental monitoring, protein extraction and sterility test.
Basically, the disposable syringe filters have good quality performances and complete categories and specifications. In general, the shells of disposable syringe filters are made of polypropylene materials which possess excellent chemical stability. Most of the manufacturers make different colors on the disposable syringe filters in order to help the users distinguish them as well as mark the specifications to avoid confusion.
Furthermore, the high-performance filter membranes in the disposable syringe filters are always with stable quality and good reproducibility. Also, the standard filters can be connected with all kinds of syringes and after filtration, the laboratory workers can directly operate sample loading.