Filter membranes

Introduction to Filter Membranes

Membrane filters are consumables with a thin membrane structure and defined pore sizes, used to separate, remove particulates, or retain microorganisms for laboratory sample purification and preparation.

Membrane filter selection depends on the chemical compatibility of the sample with materials such as Cellulose Acetate, Cellulose Nitrate, Nylon, PTFE, MCE, PES, RC, or glass fiber. Users should select the appropriate pore size (ranging from 0.2µm, 0.22µm, 0.45µm to 1.2µm, 1.5µm, 2.7µm) and membrane diameter (13mm, 25mm, 47mm, 90mm) for their filtration system. The portfolio also includes sterile options (including white or black-gridded gray membranes) for microbiological testing or non-sterile membranes for physicochemical applications. Hoa Viet currently distributes membrane filters from Newstar (China) and Sartorius (Germany).

Which brands of filter membranes does Hoa Viet provide?

Hoa Viet currently supplies genuine laboratory membrane filters from Newstar (China) and Sartorius (Germany).

What materials are available for the filter membranes in the catalog?

The portfolio includes various membrane materials such as Cellulose Acetate, Cellulose Nitrate, Nylon, MCE, PTFE, RC, PES, and glass fiber (MGA, MGD). Depending on whether the sample is an organic solvent or an aqueous solution, users can choose the appropriate membrane.

What are black gridded filter membranes typically used for?

Sterile black-grid membrane filters (white or gray background) are specialized for microbiological analysis. The grid lines help operators locate and count colonies more easily after incubation.

What diameters and pore sizes are available?

Products are available in diameters of 13mm, 25mm, 47mm, and 90mm. Pore sizes range from 0.2 µm, 0.22 µm, 0.45 µm to 1.2 µm, 1.5 µm, and 2.7 µm to meet diverse filtration levels.