What Is Syringe Filter?
Introduction of Syringe Filter
The Syringe Filter, (also called disposable syringe filter) is a type of fast filter, a convenient and reliable filtration tool routinely used in the laboratory. It is used together with a syringe to filter chemical turbid solution samples. It has a beautiful appearance, is lightweight, and has high cleanliness. Sterile filtration of particles, liquids, and gases. It is the preferred method for filtering small samples of HPLC and GC. The sterilization method can be divided into sterilization and non-sterilization.
The structure design of the syringe filter is precise and the liquid is filtered smoothly. Internal space design is reasonable, so the residue rate is very low. And it does not need to change the membrane and clean the filter, which saves complicated and time-consuming preparation work, and is widely used in the laboratory. The products are mainly used in sample pre-clarification, particle removal, sterilization, filtration, etc. Among them, the needle filter is used together with the disposable syringe, which is a fast, convenient, and reliable filtration device for small-volume samples routinely used in the laboratory.
In addition, the syringe filter has the following characteristics.
Characteristics of syringe filter
- Compared with traditional filters, the product is specially designed to withstand large blasting pressure which is not easy to crack.
- The edge part of the filter is threaded, which can play an anti-skid role. In addition, the humanized design makes the operation handier.
- The consistency of the analysis results is fully guaranteed by the stable quality of the filter membrane and the zero difference between different batches.
- The specifications are clearly marked to avoid confusion.
The Applications
A syringe filter is suitable for filtering a small number of samples in the laboratory because of its low adsorbability. The low adsorbability ensures a large amount of recovery of small or high-value samples. The shell of the filter will not pollute the samples. It has stable quality and good reproducibility infiltration. And it can be used in medicine, biochemistry, microelectronics, and environmental protection industries.
Syringe filter has been widely used in the laboratory. One of the most reasons is that the experimenter does not need to change the membrane for the syringe filters or clean it, which saves a lot of time. Thus it is mainly used in the filtration of the mobile phase or the samples in the chromatographic analysis, and also in the pre-filtration, sterilization, and filtration of clarified particles, liquids, and gases.
The experimenters usually use the syringe filter head for sample filtration, which has two types. One is the economic and practical type that can be changed, and the other is disposable. The main indicators of the syringe filters are their filter aperture, sealing, and small resistance design. It should have not only a scientific and reasonable filter channel design but also shells with strong chemical stability.
Classification
Classification by membrane, the filtration membrane plays a very important role. It can directly determine the filtration effect of the sample being separated, and the analyst can judge directly from the usage. So it is a good classification method – gas filtration/sterile ventilation, liquid filtration.
- Gas filtration/sterile ventilation is recommended to choose active carbon, hydrophobic PTFE, and hydrophobic PVDF;
- Liquid filtration is divided into three main forms, an aqueous solution, a mixed solvent, and an organic solvent;
- Aqueous solution: PES tissue culture media, nylon / MCE / PES / PP / hydrophobic PTFE for clarification/sterile filtration/HPLC;
- Nylon / PP / PTFE for mixed solvent;
- Organic solvent: nylon / hydrophobic PTFE for polar hydrophilic; PVDF / hydrophobic PTFE / PP for non-polar hydrophilic.
Classification by price localization
Tow series of products are positioned according to the price.
•HAWACH: import high-ranking level with sterilization and non-sterilization transparent membrane, transparent membrane, and less membrane material, the same style as Millipore.
•WINSTAR: the comparatively lowly kind with a non-transparent sterilization membrane.
