The user-friendly design of the needle filter makes the operator handy

The user-friendly design of the needle filter makes the operator handy

The needle filter is a fast, convenient and reliable filtering tool commonly used in the laboratory . It is beautiful and light in appearance and high in cleanliness. Because it does not need to change the membrane and clean the filter, it is a method for filtering HPLC and GC small samples. Syringe is used together. The filtration diameter is 4 mm to 50 mm, and the treatment amount is from 0.5 ml to 200 ml.

The needle filter housing is made of polycarbonate, polypropylene or polyethylene plastic. The upper and lower parts are ultrasonically welded into one body, which is resistant to high pressure and has no leakage problems. Needle filters are widely used in the laboratory. They do not require membrane change and wash filters, eliminating the need for complex and time-consuming preparations, mainly for sample pre-filtration, clarification of sterilizing and filtration of particles, liquids and gases.

In HPLC analysis, the column packing particle size is small and easily blocked by foreign particles, so the sample and solvent need to be pre-filtered to remove particulate contaminants and protect the instrument. Ion chromatography, which is commonly used in environmental analysis, also requires the introduction of inorganic contaminants in sample preparation. Needle filters can be used in HPLC analysis and IC analysis to filter sample solutions as an important step in sample preparation.

The needle filter housing material is made of high quality sanitary grade polypropylene material, and the product structure is designed with precision to ensure smooth filtration, reasonable internal space and low residual rate, thus reducing sample waste, and the edge part is threaded to prevent slipping. User-friendly design makes the operator handy. In cooperation with internationally renowned filter manufacturers, the membrane aperture is precise, providing a full range of protection for the needle filter and column.

The stable filter membrane quality of the needle filter, the zero difference between the batch and the batch, ensures the consistency of the analysis results, and the specification mark at a glance, eliminating the confusion of confusion. The core of the needle filter is the filter core. The filter core consists of a filter frame and a stainless steel wire mesh. The stainless steel wire mesh is a suitable part and needs special protection. When the filter works for a period of time, the filter core is precipitated. Certain impurities, when the pressure drop increases, the flow rate will decrease, and the impurities in the filter core should be removed in time; when cleaning impurities, pay special attention to the stainless steel wire mesh on the filter core can not be deformed or damaged, otherwise, the filter is loaded again. The purity of the medium after filtration does not meet the design requirements, and the compressor, pump, instrument and other equipment will be damaged.

The core of the needle filter is a filter element. The filter element is made of special materials. It is a suitable part and needs special protection. When the precision filter works for a period of time, the filter element blocks a certain amount of impurities. When the drop is increased, the flow rate will decrease, and the impurities in the filter should be removed in time, and the filter element should be cleaned at the same time. When removing impurities, pay special attention to the precision filter element, and it must not be deformed or damaged. Otherwise, the filter element installed again will not meet the design requirements after filtration.