Sample pretreatment of liquid consumables needle filterPurpose:

Liquid consumables needle filterMainly used for filtering mobile phases and samples in chromatographic analysis, it has a good effect on protecting chromatographic columns, pipeline systems, and injection valves from contamination. Widely used in weight analysis, microanalysis, colloid separation, and sterile testing. During use, select the appropriate filter membrane based on the sample being filtered. The selection of filter membrane is a key step in achieving * filtration effect. The material of the filter membrane needs to adapt to the different chemical properties of the filter medium.

Performance characteristics

• PTFE (polytetrafluoroethylene)

Suitable for water systems and various organic solvents, resistant to all solvents, low solubility. It has the characteristics of breathability, impermeability, high air flux, high particle retention rate, good temperature resistance, resistance to strong acids, alkalis, organic solvents and oxidants, aging resistance, non stick, non combustible, non-toxic, and biocompatibility. Its related products are widely used in fields such as chemical, pharmaceutical, environmental protection, electronics, food, energy, etc.

• Needle filter hydrophilic needle filter sample pretreatment Polyvinylidene fluoride PVDF

Performance: Polyvinylidene fluoride film has chemical stability and inertness, and is suitable for sample preparation in highly corrosive organic solvents, strong acid and strong alkali solutions, and high-performance liquid chromatography analysis It has hydrophobic properties and can filter out moisture from air and gas Polyvinylidene fluoride film is laminated on the support mesh, which has strong strength and operability, and can withstand high temperatures of 130 degrees

• Sample pretreatment of liquid consumables needle filterPES (Polyether Sulfone) water system

Performance: Has high chemical and thermal stability, fast flow rate, strong acid and alkali resistance (pH range 1-14); Has high mechanical strength.

• Water system MCE (mixed cellulose ester)

Performance: Suitable for aqueous solutions with low protein adsorption. High flow rate, strong thermal stability, not suitable for organic solvents, especially suitable for water-based solutions.

• Organic Nylon 6 (Domestic)

Performance: Has good hydrophilicity, acid and alkali resistance, antioxidant. Not only suitable for aqueous solutions containing acidity or alkalinity, but also for organic solvents such as alcohols, hydrocarbons, lipids, phenols, ketones, etc.

• Needle Filter Hydrophilic Needle Filter Sample Processing Organic nylon 66 (imported)

Performance: superior to domestic nylon 6 performance, this product is suitable for the vast majority of organic solvents and aqueous solutions, and can be used for strong acids, 70% ethanol, dichloromethane and other organic solvents. High temperature resistance, good strength, and stable chemical properties.

Needle filter, hydrophilic needle filterOrganic phase needle filter model specifications:

Material: The shell is made of medical grade PP,

Diameter: 13mm (the diameter of the filter membrane inside is 13mm, and the diameter of the filter shell is about 15mm)

Pore size: 0.45 μ m/0.22um (filter membrane pore size)

Interface: Standard medical syringe socket, which can be connected to conventional medical syringe sockets.

Filter area: 0.85cm2.

Dead volume:< 30μL

Filter pressure:< 100psi

Filter temperature:< 60℃

Packaging: Transparent plastic bags, 100 pieces per bag. Non sterile packaging.

Dead volume:< 100μL

Filter pressure:< 80psi

Filter temperature:< 60℃

Organic F 0.22u, 0.45u, 100 pieces/pack, 120.00

13 water system W 0.22u, 0.45u 100 pieces/pack 120.00

Organic F 0.22u, 0.45u, 100 pieces/pack 200.00

25 water system W 0.22u, 0.45u 100 pieces/pack 200.00

10 interchangeable membrane filter heads with a diameter of 13 per pack, 120.00

10 interchangeable membrane filter heads with a diameter of 25 per pack, 200.00

At present, the commonly used ones are polyvinylidene fluoride film (organic based), mixed fiber resin film (water-based), and nylon film (both water-based and organic based). Our company also provides users with various imported original filter membranes. The general specifications for filter aperture are 0.22, 0.45, 0.8, and 1.2um (this parameter is the average value of particles that can be filtered). At present, the diameter of the filter membrane used in conjunction with various filters is 13 φ25、φ50。 The sample filtration uses syringe filter heads, which have economical and practical replaceable membrane types and disposable types that are easy to use. The main indicators of the sample filter head are its filtering aperture accuracy, sealing performance, and low resistance design; Should have a scientifically reasonable design for filtering waterways; Choose high-quality filter membranes and supports; A shell material with strong chemical stability.