How To Pleat Fluted Filter Paper07, Jun
Unlike folding quadrants, pleating a fluted filter is not that easy and require some training or some patience. We propose an 8 steps method using symetry to improve the consistency of the pleats.
How To Fold Filter Paper07, Jun
There are a few different methods to fold a filter paper disc into a funnel-ready quadrant.
We propose an easy 3 steps method bellow.
Retention vs Pore Size07, Jun
Why some manufacturers express the filter's permeability as pore size while other use retention? And what the difference between pore size and nominal pore size?
Filter Paper Grade Equivalents05, Jun
Have you ever tried to compare filter paper between brands? Found a few cross-reference tables only to find out they contradict each others? You might have wondered how come nobody came up with a standard to describe grades and make sens of this mess?
Folded vs Fluted Filter Paper31, May
Both methods turn a flat filter paper disc into a conical shape fitting a standard 60° funnel so it can hold more solution and use gravity filtration more efficiently.
While a quadrant folded filter paper is a disk simply pre-folded in a quarter of a circle, a fluted filter paper has been pre-pleated to minimize the contact surface of the filter with the funnel, decreasing filtration time.