If you are interested, please contact us!
The sample filter is mainly used for the filtration of mobile phase and sample in chromatographic analysis, and has a good effect on protecting the column and the infusion pump tube system and the injection valve from contamination. Widely used in gravimetric analysis, microanalysis, colloid separation and sterility testing syringe filters manufacturer.
Filter sample characteristics:
A: Hydrophilic sample: It is suitable to use a hydrophilic membrane, which is suitable for filtering water as a matrix solution. Such as: tap water, surface water, available filter membranes: water film (mixed cellulose ester), nylon film (polyamide) syringe filters manufacturer.
B: A sample of an organic or inorganic compound (alcohol, ester, oil) is a nylon film (polyamide).
C: Protein solution sample: a membrane suitable for low protein adsorption. That is, PVDF film.
D: A strong acid and alkali sample is suitable for hydrophobic PTFE (polytetrafluoroethylene film).
Sample filter (Zhuzhou Lai Platinum Technology - Chromatography Consumables supplier) selection:
* Enclosure: High-pressure polypropylene (PP) is resistant to high temperature, does not leak, does not need to change film and cleaning, saves the complicated and time-consuming preparation, and is the first choice for filtering HPLC and GC small samples.
*Selection of filter specifications: commonly used Φ13μm, Φ25μm two, that is, sample amount 2-10ml select Φ13μm, sample amount 10-100ml select Φ25μm.
Characteristics and applications of several commonly used filters:
1. Water film (mixed cellulose ester CN-CA)
Characteristics: uniform pore size, high porosity, no media shedding, thin texture, low resistance, fast filtration rate, low cost, but not resistant to organic solutions and strong acids and alkalis.
Application: drinking water, surface water, well water, etc., sterilization filtration, analysis of particulate and oil insolubles in solution, determination of water pollution index, filtration of particles and bacteria such as gas, oil, beverage, wine. For sample pretreatment filtration, Zui is one of the widely used filters.
2. Nylon film (polyamide NYLON)
Features: good temperature resistance, can withstand 121 ° C, saturated steam autoclave for 30 minutes, zui high working temperature 60 ° C, good chemical stability, can withstand a variety of organic and inorganic compounds, solvents such as dilute acid and alkali.
Application: Suitable for filtration of electronic, microelectronics, semiconductor industry water filtration, tissue culture media, liquid medicine, beverages, high purity chemicals, water and organic solution mobile phase.
3.PVDF film (polyvinylidene fluoride)
Characteristics: The film has high mechanical strength, good tensile strength, good heat resistance and chemical stability, low protein adsorption and strong hydrophobicity.
Applications: Gas and steam filtration, high temperature liquid filtration, tissue culture media, additives and other sterilization filtration, solvent and chemical raw materials purification and filtration.
4. PTFE (polytetrafluoroethylene) characteristics: a wide range of chemical compatibility, good temperature resistance, strong acid and alkali, chemically corrosive solvents and oxidants.
Applications: Chemical, pharmaceutical, environmental, electronics, food, energy and other fields can filter almost all organic solutions.
This is the end of the introduction of Sample filter and selection of several syringe filters. I hope it can help you..jpg)
.jpg)
