Used in qualitative analytical techniques to determine and identify materials. It has the maximum degree of fine particle filtration (2.5¬µm) in the qualitative range. It is capable of retaining the fine precipitates encountered in chemical analysis. This filter paper has a slow flow rate. This is an excellent clarifying filter for cloudy suspensions and for water and soil analysis. Retention: 2.5¬µm. 100 circles/box.