Sterile vs. non-sterile syringes

[warlord2k10]

On Rui rui-products.com/accessories/syringes-needles-filters.html, there are two types of syringe filters, non-sterile and sterile.

Does it matter which is used for filtering or why is there two different types?

 

[bullet23]

i think when you use ba, you can use the non-sterile syringes.