GVS offers a selection of filtration holders and apparatus that are designed to ensure precise filtration work with GVS membranes. In most applications, the filter holder is just as important as the filter for accurate results every time. Filter holders are available for a wide variety of applications including air analysis, chemotaxis, tissue culturing and general aqueous and solvent filtration. Available products are 13, 25, and 47mm. Suitable for Buchner funnels and filtration under pressure. Using the highest quality material, the GVS filter papers have an enhanced mechanical strengths, quality level, and reliability. GVS offers both qualitative and quantitative filter papers, with increasing degrees of purity, hardness and chemical resistance.