Syringeless and Syringe Filters Frequently Asked Questions
How do I choose the right syringe filter membrane?
This will depend on the type of solution to be filtered. For aqueous solutions, choose Nylon or MCE membranes. For non-polar solutions, choose Nylon, PTFE or PVDF membranes. For protein solutions, choose PVDF or PES membranes.
How do I choose the suitable filter diameter?
According to the volume of the sample. For sample volumes <10ml, choose a 13mm filter diameter. For sample volumes <100ml, choose a 25mm filter diameter. For sample volumes <250ml, choose a 33mm filter diameter.
How do I select a suitable pore size?
Pore size is determined according to the size (in microns) of the particles that we want to separate. For more than 3µm, choose a filter membrane with a pore size 0.45µm and for less than 3µm, choose a poor size of 0.22µm. The lower the membrane micron rating the finer the filtration.
When should I choose a sterile or non-sterile syringe filter membrane?
This will depend on the processing applications. If the solution is already sterilized, choose a sterile filter. If your solution is going to be filtered through a sterilization process, a non-sterile filter could also work.