Page 320 - BOLA Catalogue

BOLA Filtration
Information about pore sizes – what do these indications mean?
Pore size 50 μm
5 μm
1 μm 0,45 μm
0,2 μm 0,05 μm
Application
Filtration of coarse particles, distribution of gas in liquids
Filtration of medium-sized particles, laboratory filtration, valve for packings (gas permeable, leak proof)
Filtration of aqueous solvents, elimination of particles
Prefiltration of aqueous solvents, HPLC solvents, protein solvents and alcohols, sterile filtration of air or other gases
Ultracleaning of organic solvents and alcohols, sterile filtration of air or other gases
Ultracleaning of solvents or gases (virus)
FILTRATION
What you should know about porous PTFE.
For the production of porous rods, tubes and tiles, PTFE particles are
melted together.
The pore size can be determined both by the selection of the PTFE granules and the process parameters.
Due to the non-adhesive surface, filtering devices made of fluoroplastics (PTFE/PFA) are easy to clean and have a long durability.
Microporous PTFE has the same unique properties like “normal” PTFE:
» non-adhesive / dirt-repellent
» hydrophobic / water-repellent
» non-wettable
» no release of trace elements in the filtrate (no plasticisers)
» almost universal chemical resistance to acids, bases and solvents
» excellent temperature resistance between -200°C and + 250°C (temporarily even +300°C)
» autoclavable
* not feasible with PTFE at the moment
Typical applications – often asked.
Class 00
0
1
2 3 4 5
Indication P 500
P 250
P 160
P 100 P40 P16 P 1,6
Pore size in μm 250-500* 160-250* 100-160* 40-100 16-40
10-16 1-1,6
By the way: BOLA offers custom manufacture. From 1 piece. Hotline +49 (0) 93 46-92 86-0 319