Select the appropriate air filter paper permeable to consider the following four
factors and make a decision.
Hardness:air filter paper in the filter becomes wet, some of the experimental procedure should be considered a long filter tougher water after using a wet filter paper.
Filtration efficiency: the extent and size of seepage hole density on the air filter paper, affecting its high efficiency filtration efficiency of filter paper both fast speed, and the resolution is too high.
Capacity: The accumulation of solid particles or filter clog the pores of the filter paper, and therefore the more intensive seepage holes, it represents the higher its capacity to allow the more filtration filter Timor.
Applicability: Some paper is the use of a special production step accomplished, for example, in testing medicine used to determine the nitrogen content in the blood, you must use nitrogen-free filter paper.