HILGENBERG GMBH

Do you have a special application for which neither our standard Pasteur pipettes nor the other pipettes offer an acceptable solution? On request we manufacture customized pipettes in a wide range of versions, which are precisely matched to your special application. Shown below is a small selection of the possible versions. Simply contact us for more detailed information – we will be happy to do everything to find a solution. Materials Clear soda glass & gamma-sterilizable clear soda glass Borosilicate glass 3.3 and neutral glass Quartz glass Processing Drawing long and short tips Narrowing the pipette for flow restriction Flanged rims for mounting in holding rings Tips angled at 0...90 ° Sealed tips to protect from dust Packaging Standard packaging Packaging in small quantities Individual packaging OEM packaging with your logo

Micropipettes are used mainly in medical technology and in research. Thanks to their small tips – which can be less than one micrometer – they can be used to puncture cells, inject substances, or observe and manipulate electrochemical processes by means of a reference solution. Micropipettes are a basic element in modern research, and are available in many different shapes and versions. The raw material Micropipettes are produced by heating and drawing a glass tube with a “puller”. Hereby, different tip shapes can be formed. Depending on the application, the tips can be matched precisely to your requirements. Hereby, tip diameters of less than 1 µm are possible. Shapes Whether angled tips, tips with spike or angle cut tips, slightly or heaviliy fire-polished: Every tip renders high flexibility in your applications. Gold-plated tips appear in high contrast under a light-optical microscope. On request, a Luer connector can be provided at the end of the...

The size of these pipettes lies between standard Pasteur pipettes and micropipettes. For many dosing applications, Pasteur pipettes are too large or inaccurate, and micropipettes are too small or delicate. As a solution, we have developed the mini pipette. Design and dimensions of our mini pipettes can be adapted to suit your application. A typical application area is in-vitro fertilization (IVF), for which fine and precise capillary tips are required. Typical dimensions of mini pipettes Overall lengths: 50...100 mm Tip lengths: 20...50 mm Shaft diameters: 1,5...4 mm Internal tip diameters: about 50...500 µm Optionally, the tips can be supplied closed to protect them from contamination during storage and transport. Also for our mini pipettes we offer small silicone dropper teats.

Our Raschig rings are available in various diameters from 2 mm up to 200 mm. For particularly critical applications, e.g. in reactors, we can chamfer the edges of the rings to prevent chipping when filling the reactor. Various types of glass are possible for our Raschig rings: Soda glass Borosilicate glass 3.3 Quartz glass Neutral glass Raschig rings

Thanks to their coiled shape, Wilson helices have an extremely large surface area. Moreover, they are flexible, and therefore relatively insensitive during filling. We manufacture these helices exclusively with borosilicate glass 3.3 in sizes from 2 mm up to 30 mm. Wilson multi turn helices made of borosilicate glass 3.3

Glass beads are a low-cost alternative for Raschig rings. They have less surface area than the rings, and therefore a reduced separation capacity, but they are perfectly adequate for many applications. Our glass spheres can also be supplied with a matt surface. Various types of glass are possible for our glass beads: Soda glass Borosilicate glass 3.3 Quartz glass On request, we can manufacture borosilicate or quartz glass beads with dimensions according to your specifications. Glass beads

These small pellets are made of pure, binderless sintered glass, and represent a completely new substrate for use in bioreactors. The open-pored structure of approx. 40...100 µm permits microorganisms to accumulate in the cavities between the sintered glass particles. This ensures that even deeply-embedded cells are supplied with the surrounding medium. Moreover, the material's high purity and its smooth surface provide optimum conditions for high cell growth. Application areas Trickle bed reactors in sewage treatment Substrate for microorganisms and cells in bioreactors Special features Pure sintered borosilicate glass 3.3 Pore size about 40...100 µm Pellet diameter 4 mm Large surface area Optimum flow characteristics High surface charge (Zeta potential) Top-class biocompatibility Enhanced cell growth, because there is no cell agglomeration due to confinement in microcapsules. This REM image shows the open structure and the smooth surface as a result of the sintering process....

Our standard glass beads are simple products in sizes from 1 mm upwards, and with a relatively wide range of tolerances. They are usually made of soda glass, borosilicate glass or lead glass, whereby the surfaces can be matt or polished. On request, we can manufacture borosilicate or quartz glass beads with dimensions according to your specifications. Standard glass beads

Our high-precision glass beads are usually made of soda glass or borosilicate glass, but on request we can also supply quartz glass, sapphire glass or optical glasses. The standard tolerance is ± 0,02 mm. Without surcharge, the surfaces can be supplied matt or polished. You need even higher precision? No problem: We can also supply customized glass beads with tolerances of ± 0,01 and ± 0,005 mm. Precision glass beads

We supply coloured glass beads in many different sizes. Because of the intended applications, the sphere diameters usually have a wide range of tolerances. Numerous colours are available, with matt or polished surfaces.