Introduction and Precautions to Use of Syringe Filter

Introduction to Use of Syringe Filter

1. Before inhaling the sample, draw about 1ml of air into the syringe to minimize liquid residue;
2. Inhale the sample into the syringe, turn the syringe upside down and clear all residues on the top;
3. Tighten the syringe filter gently to ensure a good seal performance;
4. Filter the sample in the syringe and inject it into the sample bottle, and then follow the steps to maximize the recovery rate; remove the filter, draw air into the syringe, reconnect the filter head, and push out all residual samples.

Superior Performance of Syringe Filter

The larger membrane surface area of the HEPA syringe filter increases the flow rate and throughput. It also reduces the pressure required to empty the syringe, making it easier to filter the solution, and the color outer strip on the housing clearly indicates the type of filter membrane inside.

The manufacture of the syringe filter is carried out in a controlled environment and automatic process. During the assembly process, the operator's hand will never touch the filter. The sterile syringe filter has the lowest protein adsorption in the syringe filter. The sterile syringe filter adopts a mixed cellulose ester (MCE) membrane, which can reliably and routinely filter water, buffers or other aqueous solutions. The filter membrane with a larger pore size is used for clarification and pre-filtration.

Precautions of Syringe Filter

Use syringes with a volume of less than 10ml with caution because the pressure of such syringes is sufficient to burst the needle filter. Use the recommended filter membrane is a good choice if you cannot determine which one is better. The syringe filter uses a mixed cellulose ester (MCE) membrane, which can reliably and routinely filter water, buffers or other aqueous solutions, and a filter membrane with a larger pore size is used for clarification and pre-filtration. However, the temperature, concentration, contact time of the sterile syringe filter, and other factors beyond our control will affect the use of the filter device.

Application of Syringe Filter

Syringe filter is widely used in laboratory, it does not need to change membrane and clean filter, and saves complex and time-consuming preparation work. It is mainly used in sample pre-filtration, decontamination of particles, liquid and gas, etc. Syringe filter is a fast, convenient and reliable filter tool, which not only has beautiful appearance, light and high cleanliness, but also does not need to change membrane and clean filter and saves complex and time-consuming preparation work. It is widely used in laboratory and is widely used in sample pre-filtration, decontamination of particles, liquid and gas. is a method of filtering HPLC、GC small quantities of samples.

Shell Materials of Syringe Filter

Syringe filter shell material is polycarbonate plastic, the upper and lower part by ultrasonic welding into one, high pressure resistance, there is no product leakage problem. Hawach syringe filter contains hydrophobic PTFE membranes，which is an effective filter for different solutions. Teflon membrane and strong polypropylene shell are especially suitable for filtration of corrosive chemicals. The product structure design is precise, ensures the filtration fluency, the internal space rationalization, the residue rate is very low, is only half of the other products in the current market, and thus reduces the sample waste

Syringe filters are usually disposable. Normally, a sample corresponds to a filter head, because there is the possibility of cross-contamination when used many times. The material selection of the filter in the filter head is also the key to the correct use of the filter head.

Syringe filters do not need to change membranes and clean filters, which eliminates complex and time-consuming preparations, and are widely used in laboratories.

Guidelines for selection of Syringe filters and filter membranes

Selecting different kinds of filter membranes with different pore sizes to filter the mobile phase and samples can clarify and remove bacteria and impurities. It is of great significance for the protection of chromatographic system and chromatographic column.

Housing of syringe filter

High-pressure polypropylene (PP) has high-temperature resistance, no leakage, no need to change membranes and clean, and the preparation work of eliminating complicated and time-consuming is to filter small sample products of high-performance liquid chromatography and GC.

Selection of filter specifications

13 micron and 25 microns are commonly used, i.e. 13 microns is selected for a sample volume of 2-10 ml and 25 microns for a sample volume of 10-100 ml.