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.
WPM: The most commonly used typing speed measurement but there are differences in word length, so a word in the WPM standard is five characters. How many words can a person type per minute on average? It is no sense to use a real word to measure a person's typing speed. The average person types about 40 WPM and half the population lacks the finger dexterity to type faster than 50 WPM.