Main filter of 5 micron or 10 micron performs differently in a huge way, as a 5 micron filter prevent most of debris from entering the printer, while a 10 micron one is more welcoming. The 10 micron filters are usually applied on printer with color pigment, which particles are larger than the black ink.
When you look for what micron is of our compatible main filter, please look at the label directly, the number is on there, take the 500-0047-130 Willett main filter for example, we can see 5.0 micron on the label. Some of you may baffled by the numbers printer on the the filter, which is actually our batch number, it has nothing to do with the filtering micron.
If you are not sure which filter should be bought, please feel free to tell us your printer model, ink type etc, we will supply the suitable filters accordingly.
L&S CIJ Codification Parts 