Tisch Scientific is comprised of ISO9001 certified manufacturing, sales and distribution facilities for membrane filters, mesh filters and filter papers and their related devices. These devices are syringe filters, disk filters, capsule filters and various filter holders. We compliment this product offering with the expertise to help our customers make the optimal choice for their filtration requirements. Our videos are extension of that customer service. Feel free to contact us at 513-467-0222 or SalesTeam@tisch-env.com, www.ScientificFilters.com