HAWACH specializes in lab experimental consumables that are engineered and built to meet the industry specific needs of small and medium size companies. We provide high value, one-stop shopping systems that are easy to use, easy to clean and easy to maintain for the lowest total cost of ownership.
Being a single-use filter cartridge located at the end of a syringe, syringe filter is a good tool to remove small particles from a sample before analysis in the lab. With the luer lock which can fit the secure fit attach the syringe, syringe filters provide efficient filtration in many fields, such as pharmaceutical, biotechnology and agricultural laboratories.
You can find syringe filters with different types of membrane. So before you select a syringe filter, you need to know what kind of the filter membrane is appropriated for your application.
To handle different applications, the syringe filter's membrane can be made of various materials. The most common filter materials are cellulose acetate and polyethersulfone. Depend on their chemical compatibility, flow rate, and burst pressure, we can tell the differences of the membranes. You may find out the different capacity of the filter, as the material will change the effective filtration area. The design of filter body, different filter and pore size should be considered too.
Here I would like to share the Hawach syringe filter, like the usgae, type and features.
HAWACH syringe filters is mainly used for filtration of mobile phase and samples in chromatographic analysis. It has a good effect on protecting the chromatographic column, infusion pump tube system, and injection valve from being contaminated. It is widely used in gravimetric analysis, microanalysis, colloid separation and sterility test.
There are two types, water system and organic media system.
Characteristics of filter membrane material in syringe filter
A. PTFE (polytetrafluoroethylene)
Performance: it is all solvents-resistant, with low solubility and suitable for water system and various organic solvents. It has the characteristics of breathable and water-tight, large air flux, high particle retention rate, good temperature resistance, resistance to strong acids, alkalis, organic solvents and oxidants, aging resistance and non-stickiness, non-flammability and non-toxicity, and biocompatibility. In environmental protection, energy, pharmaceutical, chemical and electronics etc. can find its related products.
B. Water-based PES (Polyethersulfone)
Performance: It has high chemical and thermal stability, fast flow rate, strong acid and alkali resistance (pH range 1-14); has high mechanical strength.
C. Organic nylon 6
Performance: Good hydrophilicity, acid and alkali resistance, antioxidant. Not only for aqueous solutions containing acid and alkali, but also for organic solvents such as alcohols, hydrocarbons, lipids, phenols, and ketones.
D. Organic nylon 66
Performance: Better than domestic nylon 6. This product is suitable for most organic solvents and aqueous solutions. It can be used for organic solvents such as strong acid, 70% ethanol, dichloromethane, with high temperature resistance, good strength and stable chemical properties.
Performance: Polyvinylidene fluoride membrane is chemically stable and inert, suitable for chemically corrosive organic solvents, strong acids and alkali solutions, and sample preparation in liquid chromatography analysis. It has hydrophobic properties and can filter out air and gases Moisture content. With strong strength and operability, the polyvinylidene fluoride membrane can withstand high temperatures of 130 degrees.