Cleaning processes often involve the use of strongly alkaline or acidic cleaning agents. Compared to the standard plastic Pasteur pipettes, our glass pipettes are resistant to most solvents and cleaning agents, as well as acid and alkaline solutions. During steam sterilization, in particular, the stability of the glass pipettes is a clear advantage as the pipettes are additionally exposed here to pressure and high temperatures.
During the intake of non-aqueous samples that evaporate when temperatures reach 100°C, plastics can lose their dimensional stability, become soft and start bending. A typical steam sterilization process reaches temperatures of 134°C, while temperatures can reach 180°C during hot air sterilization. As our glass pipettes are heat resistant and can be heated at far higher temperatures than plastic pipettes, sterilization is not a problem. Pyrolytic cleaning is also a short-term option for our pipettes, despite temperatures here reaching 500°C.
Furthermore, glass does not react to organic material, such as somatic cells or even germ cells. This is particularly useful in the field of in-vitro fertilization. Even in small structures, glass retains its shape when exposed to high temperatures.
Advantages at a glance
- Resistant to a number of solvents and cleaning agents, as well as acid and alkaline solutions
- Mechanically stable (do not bend, unlike plastic Pasteur pipettes)
- Slower advance of liquids (tip not completely straight)
- Suitable for mouth pipetting (insertion of filters possible)
- Suitable for sterilization using heat, steam, wet heat, EO (ethylene oxide), plasma (gas mixture), and high pressure
- Suitable for gamma sterilization (with several types of glass)