Buchner funnel, but not filter paper.
you can use buchner funnel or filter paper, specific question needs precious analysis, it mainly depends on the filter state, if solid particles are large, you can directly use ordinary funnel but not filter paper, when solid particles are small, you can use filter paper.
It depends on the filtering materials, if the solid particles are large, you can directly use ordinary funnel but not filter paper, if solid particles are small, you can use filter paper, you can try to use a small amount of filtering materials, and decide in accordance to the filtrate state, the trial is necessary and you will know after lots of trials.
