Features and Selection of HAWACH Syringe Filter

Brief introduction of syringe filter

The reason why 5 micron syringe filter is widely used in experiments is that it is time saving, no need for membrane replacement and filter cleaning, without complicated and time-consuming preparations.

HEPA syringe filter main uses include liquid/air sterilization filtration, sample prefiltration, clarification, and removal of particles. The syringe filter is composed of polycarbonate plastic housing, with its upper and lower parts welded together by ultrasonic, featuring high pressure resistance and good sealing.

With the feature of low adsorption of samples and maximum recovery of small or high-value samples, the syringe filter is used for small amount of samples filtration in the laboratory. The lower part and upper part of the syringe filter are welded together by ultrasonic with the housing of polycarbonate, polypropylene, polyethylene plastic, featuring high pressure resistance and no leakage problems. Therefore, it will not contaminate the sample.

Relatively speaking, PES, MCE, PTFE, NY, PVDF, etc. Mainly trap particulate matter in the membrane. The GF membrane surface has strong dirt holding capacity, but for the absolute retention accuracy, it is lower than the microporous membrane.

Therefore, it is often used in coarse filtration and pre-filtration to give priority to the retention of large particles, while protecting the efficiency of the subsequent membranes, preventing the subsequent membranes from being blocked, and increasing the product use effect. Another membrane that can be used as a pre-filtration is PP, which is the same as GF and used at the front end of membrane filtration to prevent filter clogging.

There is no problem with the stability of syringe filter. The reason is: for the factory's strict quality control, there are strict links such as raw material inspection, production process monitoring, and finished product inspection to ensure that its quality is correct. For most laboratory needs, HAWACH syringe filters are suitable.

Features of HAWACH syringe filter

We can see the uses of syringe filters in many applications, such as food, medical, municipal water treatment, wastewater treatment and reuse, and material concentration and purification. Also, it can be used in dairy product manufacturing, semiconductor manufacturing, food manufacturing, paper manufacturing, and pharmaceutical manufacturing, etc. For this, operators will choose the ultrafiltration membranes and microfiltration membranes.

1. It is suitable for the filtration of a small amount of samples in the laboratory, and the adsorption of the samples is extremely low, which ensures the recovery of the samples.
2. The outer shell is made of polypropylene material without adhesives and will not contaminate the sample.
3. The outlet of the tube can be connected to facilitate the accurate filling of the filtrate into the micro bottle.
4. Equipped with membranes of different materials, which can be selected according to the nature of samples. For ventilation and sterilization, the PTFE hydrophobic, PVDF, activated carbon series are chosen. For organic solution, Nylon, PTFE hydrophobic, PP membranes will be used. For organic water mixed solution, Nylon, PTFE hydrophilic, PP are used. For water system, most hydrophilic membranes can be used. Commonly used membranes in biology are PES, MCE, CA.

In general experiments, it is used to filter samples, mobile phases, solvents, etc. Therefore, if certain impurities are dissolved in the filter membrane itself during the filtration process, it will seriously affect the customer's experimental results. HAWACH membranes have the following advantages in this regard:

1. The membrane is made of high quality raw materials with uniform material and low impurity content;
2. 10W clean workshop cutting and packaging, high cleanliness, no impurity introduction.

The use of a syringe filter is a cheap and effective method to improve the quality of HPLC analysis, make the analysis results stable and continuous, and have a long service life of the chromatographic column. Before entering the chromatographic column, by removing impurities in the sample, the HAWACH syringe filter makes the liquid flow unimpeded in the chromatographic column. Without the obstacles of these impurities, your column will work more efficiently and lastingly. The unique design makes the filter has a larger membrane area and a smaller dead volume.

HAWACH provides various filter membranes for syringe filters to meet different experimental and test requirements, such as active carbon, nylon, PTFE, PES, PVDF, CA, GF, PP, and MCE. For instance, the mce syringe filter has pore sizes of 0.22, 0.45, 0.8um, and its diameter has 13, 25, 30 with sterile and non-sterile packaging. From the appearance, HAWACH syringe filters are beautiful and compact, with easy operation, precise and reliable performance, high cleanliness, a variety of specifications, and packaging.

Selection of syringe filter

HAWACH has summarized several aspects to consider when choosing a syringe filter.

1. Quality.

It is hoped the syringe filter can remove as much bacteria as possible without introducing other substances, such as bacterial endotoxins or chemical precipitates, as it is sterilization.

2. Filter membrane.

Many kinds of filter membranes used in syringe filters are available, like we’ve mentioned above. Both chemical compatibility and filtration time should be considered when purchasing.

3. Specifications.

After determining the filter membrane, it is relatively easy to select specifications.