Stainless steel
| Type | German steel grade number | German DIN-number | French AFNOR-Code | US-code |
| V4a | 1.4571 | X6 CrNiMoTi 17-12-2 | Z6 CNDT 17-12 | 316 Ti |
| V2a | 1.4301 | X5 Cr Ni 18-10 | Z6 CN 18-09 | 304 |
| V2a | 1.4305 | X8 Cr Ni S 18-09 | Z8 CNF 18-09 | 303 |
Synthetic materials
Teflon is a fluorcarbon and the colloquial denotation of Polytetrafluorethylen (PTFE). Teflon is ideal for the use in safety containers for the following reasons:
- only very few materials can break the chemical chains of Teflon and cause a reaction
- Teflon has an extremely low surface energy - it is therefore not adhesive, i.e. hardly any material sticks to Teflon
- it is highly resistant against nearly all chemical compounds (only strong reducers and strong oxidants impair the resistance)
- Teflon does not burn, only very hot flames in red heat may cause some degradation (may lead to disposal of harmful smoke)
Other types of Teflon are tetrafluorethylen (FEP) and perflour-alkoxylalkan (PFA). For more detailed information about the resistance of Teflon please also visit resistance of materials.
Some of the gaskets in our funnel program are made of polyethylen (PE). PE consists of hydrogen and carbon. It is characterized by a high resistance against acids, bases and other chemicals as well as high robustness, durability and elasticity as well as good sliding behaviour. On each of our product pages you find information about the respective materials applied.