Laboratory Filters (Syringe, Membrane, Bottle Top)

Laboratory filters are essential tools for small-scale liquid filtration, sterilization, and sample preparation across molecular biology, microbiology, and analytical chemistry workflows. This product type includes syringe filters, membrane filters, and bottle-top filters—each designed to ensure sample integrity, reduce contamination risk, and support high-precision laboratory processes. Syringe filters are single-use, membrane-based devices ideal for clarifying or sterilizing small-volume samples. Commonly used in buffer preparation, HPLC sample cleanup, and cell culture workflows, they are available in a range of pore sizes (0.22 µm, 0.45 µm) and membrane materials such as PES, PVDF, nylon, and PTFE. Selection is based on solvent compatibility and sample type. Membrane filters are flat disc membranes used in analytical testing, microbial monitoring, and particle removal. Often employed in pharmaceutical quality control, water testing, and bioprocess validation, these filters work in conjunction with filter holders or manifolds and are designed to retain microorganisms or particulates on the membrane surface for further analysis. Bottle-top filters enable sterile filtration of large liquid volumes, such as cell culture media or buffer solutions, directly into storage bottles or filter flasks. These devices combine a membrane unit with a screw-threaded top that fits standard lab containers and are commonly used in tissue culture and sterile reagent preparation. Most come pre-sterilized and feature PES or PVDF membranes in pore sizes ranging from 0.1 to 0.45 µm. At Wasteless Bio, all laboratory filters are surplus but unused, ensuring both quality and sustainability. Listings include key specifications such as pore size, membrane type, housing diameter, volume capacity, sterility status, and chemical compatibility—making it easy for researchers to source reliable filtration products while reducing waste and procurement costs.