At DWK Life Sciences, we understand that filtration, a core and critical function in laboratories, require robust, functional yet safe laboratory equipment to get the job done efficiently with minimal waste or loss. Innovative and standard solutions, plus interchangeable parts, replacement parts, and user-configurable connection options make our portfolio your single source for lab filtration needs. From ultrafine to coarse filtration, our crucibles, funnels, microfiltration, mobile phase filtration systems, and our airless filtration offerings are used daily in labs worldwide.
Our ULTRA-WARE® Microfiltration Assemblies are available in both fritted 10-160 micron porosities and non-fritted versions. To support your work, they will both withstand corrosive liquids while offering fast, secure, and easy removal of particulates from HPLC solvents. Our microfiltration assemblies, available in 25, 47 and 90 mm diameters, are the ideal solution for filtration needs from milliliters to liters. Units feature standard ground joint, GL-45 bottle and Erlenmeyer adapters, as well as multiple reservoir sizes. In addition, to suit particular needs, custom solutions or component modifications are available upon request through our Custom Glass Shop services. PTFE-faced or stainless steel supports limited sample contact with any non-glass components during filtration. DURAN® Glass Filtration apparatus is available in 1000 and 2000 mL sizes and includes a graduated filter head or reservoir and clamp. Extension body has GL 14 hose stem with 45/40 ground joint to mate with filter flask. All glass is made with borosilicate glass for purity, safety, and durability. All of these components are autoclavable.
ULTRA-WARE® HPLC reservoirs are designed for the preparation, storage, and delivery of liquid chromatography mobile phases and feature conical bottoms for more efficient use and delivery of solvents. Additionally, the conical bottom design supports safer lab equipment operations since the reservoirs do not require ‘tilting’ atop the instrumentation. Design options allow real-time filtering of the mobile phase to eliminate the hand-pouring of solvents into filter funnels. We’ve also included options for graduations and a full range of reservoir sizes from 250 mL to 20000 mLs. To reduce the hazards of shattered glass and leakage of toxic or corrosive chemicals, KIMCOTE® Safety Coating is also available. All of these components are autoclavable.
Our SPE manifolds improve solvent utilization to optimize methods. Their innovative design offers a safe lab equipment experience and provides more uniform results in less time than traditional gravity-style SPE methods. Our complete line of ULTRA-WARE® SPE vacuum-style manifolds in one, three, or six-station versions, feature interchangeable parts, heavy-duty stainless steel base with integrated handles, PTFE valves for flow control, and a vacuum hose barb connection. Also available are glass microfiltration funnels as well as multiple reservoir capacities options from 250 mL to 30 L to give you the flexibility to operate different reservoir sizes on the three or six-position manifolds. Another convenient feature is the robustly made ground-glass joint which allows secure manifold coupling while still removing easily for cleaning or reconfiguration.
KIMBLE® KIMAX® filtration bells are useful for filtrate recovery with crucibles, beakers, or for other lab purposes. KIMBLE® KIMAX® KIMFLOW® fritted disc crucibles in low-form and high-form Gooch designs, are ideal for applications where filtrate would attack paper filters and membranes. We also offer DURAN® crucibles in 50-4000 mL sizes with porosities ranging from 1-5. Our DURAN® filter crucibles offered in 8-50 mL sizes are made with borosilicate glass for durability and purity. KIMAX® Filtration Domes recommended for EPA-style sample digestions prior to atomic absorption spectroscopy, speed work up to three times faster than gravity methods for increased sample throughput.
KIMBLE® and DURAN® filtration funnels, such as Buchner and Hirsch designs, handle volumes from 2 to 3000 mLs and feature 24/40 hose connections to standard lab equipment, stems, or ground joint versions with 4-60 micron porosity. The DURAN® analytical funnel is our recommendation for quick filtration. Its long stems — 65 80 and 100 mm diameters —accommodate filter papers from 70-185 mm in diameter.
KIMBLE® KIMAX® KIMFLOW® airless portfolio optimizes lab equipment and connections needed for gas handling including gas storage glassware, gas washing bottle assemblies such as Schlenk-style, and airless gas bubblers with HI-VAC® valves. AIRLESS-WARE® Straus Flask in 500 and 1000 mL size is designed for solvent gas storage as required during many inorganic reactions. Kimble® HI-VAC® valve ensures solvent integrity and gas access.