Description
BOLA pressure equalisation membranes for GL 32 are PTFE filter membranes with a thickness of 0,2 mm and a pore size of 2,5 µm. Designed for GL 32 threads, the round discs have a diameter of 29 mm according to the manufacturer dimensions and enable pressure equalisation with fine filtration. Fabricated from polytetrafluoroethylene (PTFE), they offer an inert barrier suitable for laboratory vessels that must breathe without unrestricted open vents. Flow rates reach 80 l/h at 0,5 bar and 320 l/h at 1 bar, matching higher throughput needs on larger neck sizes. Supplied in a pack of 5 pieces from manufacturer Bohlender, the membranes integrate into GL 32 screw-cap systems common on bottles and reactors. Net weight is given as 0,00215 kg, reflecting the lightweight PTFE construction. These discs support controlled gas exchange during storage, sampling, or reaction work where differential pressure must be managed while retaining particles at the stated pore size, keeping closures functional and process-safe in everyday laboratory practice.
This article is part of Membrane filters, in Filtration.
Key features
- Pack size: 5 pc(s)
- Material: Polytetrafluoroethylene (PTFE)
- Thread size: GL 32
- Disc diameter: 29 mm
- Thickness: 0,2 mm
- Pore size: 2,5 µm
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about BOLA Membranes for compensation, GL 32, Ø 30 x 0,2 mm, 2,5µm PTFE Pack size: 5 p
What is this article?
BOLA Membranes for compensation, GL 32, Ø 30 x 0,2 mm, 2,5µm PTFE Pack size: 5 p is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Membrane filters, inside Filtration, in Lab consumables.
A membrane filter is the disc itself, without a syringe housing. Pore size, polymer and diameter are the specification, and the disc has to sit in a holder. Gridded membranes are for counting colonies. A membrane and a filter paper of the same diameter are not interchangeable.
Filtration holds back what is larger than the pores and lets the rest through. Paper is the ordinary laboratory filter. A membrane has a stated pore size and a polymer that must survive the solvent. A syringe filter is that membrane in a housing on a syringe. Glass fibre takes a higher dirt load. Ultrafiltration holds back macromolecules and passes salts. The pore size, the chemical compatibility and the volume are the three choices. Laboratory apparatus around filtration is indexed under ISO laboratory apparatus.
Which category should I open next?
The category is Filtration. The sub-category is Membrane filters. The catalogue is Lab consumables.
Shelves beside this one are Filter paper, Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, Glass & quartz fibre filters, Bottle-top & vacuum filtration units, Ultrafiltration & concentrators, Filtration accessories, Extraction thimbles and Dialysis tubing & devices.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.