noun, plural: filtrations. (1) The movement of water and solutes across the cell membrane due to hydrostatic pressure from the cardiovascular system. (2) The process of separating suspended particles from the fluid through a porous material in which the fluid can pass while the suspended particles are retained.
I think a good typing speed if you need to type a lot would be ideally 80 wpm and minimum 60 wpm. Anything lower than 60 and you'd struggle typing longer texts. I suggest you try TypeRacer - the global typing competition or simply practice touch typing on one of the free typing softwares.
The typing tool (above) records the number of characters and words you can type in a minute and gives you a percentage score to compare your speed with the average score of 187 characters per minute (CPM) The typing test (screenshot shown above) only takes a minute and can be used to learn to touch-type.