Accessories
alumina
Porous aluminum oxide is an ordered ceramic material featuring regularly arranged nanopores. The membranes provided by SmartMembranes consist of uniform, parallel pore structures with precisely controllable pore sizes in the nanometer range.
The material is available as free-standing membranes or as one-sided closed templates, combining high porosity with thermal stability. Owing to its structural uniformity, porous alumina is particularly well suited as a functional substrate for analytical and microscopic applications.
In addition, porous alumina is widely used as a template for the controlled fabrication of micro- and nanostructures, such as nanotubes, nanorods, or hybrid material systems. This makes it a versatile material platform for applications in analytics, filtration, and nanotechnology.
Glass Filtration Apparatus
The filtration apparatus made of high-quality laboratory glass is designed for precise and contamination-free filtration processes. Its transparent construction allows continuous visual monitoring of the filtration process, which is particularly beneficial for analytical applications and sensitive samples.
The apparatus is completely polymer-free, making it especially suitable for applications where interactions with plastics must be avoided, such as microplastic analysis, environmental analytics, and sample preparation for spectroscopic techniques. It can be easily integrated into existing laboratory setups and is compatible with standard glassware.
Material Properties
Pore diameter
Adjustable from 25 nm to 350 nm
Interpore distance (fixed)
65 nm, 125 nm, or 480 nm
Standard deviation
< 10%
Flow-through membranes
With symmetric pores
Porous templates
With one-sided closed pores (on aluminum substrate)
Pore depth
From 200 nm (template) up to 130 µm
Porosity
Adjustable from 10%
Thermal stability
Up to 1000 °C (depending on the environment)
Chemical stability
Chemically inert in most solvents; not resistant to strong acids or strong bases
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Stainless Steel Filtration Apparatus
The stainless steel filtration apparatus provides a robust and durable solution for demanding filtration applications. It is designed to withstand higher mechanical loads and enables reproducible and controlled filtration, even for larger sample volumes or increased flow rates.
Thanks to its polymer-free design, the apparatus is ideally suited for contamination-sensitive applications. The stainless steel construction allows for thorough cleaning and repeated use, making it a reliable choice for routine operation in analytical laboratories, research environments, and industrial settings.
Material Properties
Pore diameter
Adjustable from 25 nm to 350 nm
Interpore distance (fixed)
65 nm, 125 nm, or 480 nm
Standard deviation
< 10%
Flow-through membranes
With symmetric pores
Porous templates
With one-sided closed pores (on aluminum substrate)
Pore depth
From 200 nm (template) up to 130 µm
Porosity
Adjustable from 10%
Thermal stability
Up to 1000 °C (depending on the environment)
Chemical stability
Chemically inert in most solvents; not resistant to strong acids or strong bases
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MakroPor
Die MakroPor Membranen besitzen Poren mit einem einheitlichen Porendurchmesser (Abweichung unter 5%), der über die gesamte Porenlänge hindurch konstant bleibt. Die Poren sind aufgrund der Vorstrukturierung über die gesamte Fläche des Wafers gleichmäßig exakt hexagonal oder quadratisch angeordnet. Durch eine zusätzliche anisotrope Ätzung können die runden Poren auch zu viereckigen aufgeweitet werden.
Standardprodukte
| Interpore distance | Pore diameter | Pore length | Pore arrangement |
|---|---|---|---|
| 1,5 µm | 1 µm | 50, 200 µm | trigonal |
| 4,2 µm | 2,5 µm | 50, 200 µm | trigonal |
| 12 µm | 5 µm | 350, 500 µm | square |
| 20 µm | 8 µm | 500 µm | square |
Material­eigenschaften
Porendurchmesser anpassbar ab 1 µm bis 17 µm(größer möglich)
Porenabstand und Anordnung der Poren anpassbar durch Anfertigung einer Photomaske zur Vorstrukturierung
Standardabweichung < 5%
Durchflussmembranen mit symmetrischen Poren
Poröses Silizium mit einseitig geschlossenen Poren
Porentiefen von wenigen µm bis 500 µm
Porosität einstellbar ab 20%
thermisch stabil bis 1200ºC
(abhängig von der Umgebung)
funktionalisierbare Oberfläche
Porendurchmesser
anpassbar ab 1 µm bis 17 µm (größer möglich)
Porenabstand und Anordnung der Poren
anpassbar durch Anfertigung einer Photomaske zur Vorstrukturierung
Standardabweichung
< 5%
Durchflussmembranen
With symmetric pores
Porous silicon
With one-sided closed pores
Pore depth
wenige µm bis 500 µm
Porosity
Adjustable from 20%
Thermal stability
Up to 1200 °C (depending on the environment)