PP Filter Membrane 350mm

Customized pore size

Polypropylene (PP) filter membranes are commonly used in laboratory settings for various filtration applications due to their chemical resistance, low extractables, and thermal stability. Here are some key features and uses of PP filter membranes in the laboratory:

Key Features of PP Filter Membranes:

1. Chemical Resistance: Polypropylene membranes are resistant to a wide range of chemicals, including acids, bases, and organic solvents. This makes them suitable for filtering harsh chemicals and aggressive solutions.

2. Low Extractables: They have low levels of extractable impurities, which ensures that the filtration process does not introduce contaminants into the filtered solution. This is particularly important in analytical and sensitive applications.

3. Thermal Stability: PP membranes can withstand high temperatures, making them useful in applications that require autoclaving or heat sterilization.

4. Hydrophobic Nature: Polypropylene is naturally hydrophobic, making these membranes ideal for filtering non-aqueous solutions or for use as a pre-filter in combination with hydrophilic membranes.

5. Mechanical Strength: They offer good mechanical strength and durability, allowing for repeated use in some applications, provided they are cleaned properly.

Uses of PP Filter Membranes in Laboratories:

1. Sample Preparation: PP membranes are often used to clarify and sterilize samples before analytical procedures such as high-performance liquid chromatography (HPLC) or gas chromatography (GC).

2. Particle Removal: Due to their fine pore structure, PP membranes are effective at removing particulates from solutions, making them suitable for applications where particle-free solutions are required.

3. Pre-filtration: They are frequently used as a pre-filter to remove larger particles before the solution passes through a more precise final filter, thereby extending the life of the final filter.

4. Vent and Gas Filtration: The hydrophobic nature of PP membranes makes them ideal for venting applications, such as sterilizing gas streams or protecting vacuum pumps from contaminants.

5. Microbial Analysis: PP membranes can be used in microbiological assays to capture bacteria, yeasts, and molds, particularly in aqueous solutions.

6. Environmental Monitoring: In environmental testing, PP membranes are used to filter water and air samples for the detection of pollutants, particulates, and microorganisms.

Considerations for Use:

• Compatibility: Ensure that the PP membrane is compatible with the chemical composition of the solution being filtered.
• Pore Size: Select an appropriate pore size depending on the application needs (e.g., 0.2 µm for sterilization, 1 µm for particle removal).
• Flow Rate and Pressure: Be aware of the flow rate and pressure requirements, as PP membranes can have varying flow characteristics depending on their thickness and pore size.