Filtration is important for drip irrigation systems and here you will find exactly what you need to keep your drip system clean from debris which might clog up drippers or microsprinklers.
The main option is to use a "Screen" or "Disc" type filter.
A screen is just that and comes in a polyester or stainless steel material and each with different mesh sizes. Screens are best for sand or general dirt filtration.
A disc is just that, like a plastic plate stacked on top of each other with different sized grooves as a mesh size. Disc's are best for filtering organic material.
Mesh sizes are largest / coarsest openings being a 80 mesh and the smallest / finest being a 200 mesh.