|Acid dissolve rate
Elements go inside and then come out of Portal OUT.
A system where only Portal IN exists will result in the particles first entering and being stored in the PRTI, after a short time though, it will cause the particles to sile up outside the Portal IN until a Portal OUT is created.
The larger the surface area of Portal In you have at one time, the faster it will come in.
Produces a small amount of Low Pressure to attract particles.
Also, the pressure it creates does not break breakable elements.
Note: Portals can also be used like WIFI to transfer SPRK to other places. It also comes with channels defined by heat, just like with WIFI. This way you can have multiple portals that don't link to each other in one save.