Beschrijving
BOLA pressure equalisation set for GL 25 threads is a laboratory fitting that combines a PPS screw cap for standard GL threads, a PTFE/silicone seal and a replaceable PTFE filter membrane with 2,5 µm pore size. Only PTFE contacts the medium, ensuring very good chemical resistance across typical laboratory solvents and reagents. Pressure equalisation starts at a differential pressure of 0,1 bar, supporting safe venting when temperatures change or gases form. Disc diameter measures 23 mm. Flow performance reaches 50 l/h at 0,5 bar and 180 l/h at 1 bar. Net weight is 0,013 kg. Offered as a ready-to-use assembly from manufacturer Bohlender, it suits bottles, flasks and reactors with GL 25 necks that require controlled gas exchange and particle retention. The exchangeable membrane allows straightforward replacement during routine use. Ideal for chemical and life-science workflows where inert wetted surfaces, reliable pressure balance and compatibility with common laboratory glassware closures are essential for everyday operations.
Key features
- Pack size: 1 pc
- Thread size: GL 25
- Cap material: PPS
- Seal: PTFE/silicone
- Filter membrane pore size: 2,5 µm (PTFE)
- Disc diameter: 23 mm

