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Grade 4 Qualitative Standard Filter Circles

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 4: 20-25 µm
Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Very useful as a rapid filter for routine clean up of biological fluids or organic extracts during analysis. Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Click on Item# to view possible quantity discounts that may be available.
 Item# Description Price Quantity  
AKM-9007-0161 25mm Qualitative Standard Filter Circle Grade 4, Case of 100 $6.54
AKM-9007-0165 42.5mm Qualitative Standard Filter Circle Grade 4, Case of 100 $6.54
AKM-9007-0166 47mm Qualitative Standard Filter Circle Grade 4, Case of 100 $7.68
AKM-9007-0167 55mm Qualitative Standard Filter Circle Grade 4, Case of 100 $7.79
AKM-9007-0168 70mm Qualitative Standard Filter Circle Grade 4, Case of 100 $8.11
AKM-9007-0169 90mm Qualitative Standard Filter Circle Grade 4, Case of 100 $12.22
AKM-9007-0156 110mm Qualitative Standard Filter Circle Grade 4, Case of 100 $15.53
AKM-9007-0157 125mm Qualitative Standard Filter Circle Grade 4, Case of 100 $19.93
AKM-9007-0158 150mm Qualitative Standard Filter Circle Grade 4, Case of 100 $25.50
AKM-9007-0159 185mm Qualitative Standard Filter Circle Grade 4, Case of 100 $37.71
AKM-9007-0160 240mm Qualitative Standard Filter Circle Grade 4, Case of 100 $55.16
AKM-9007-0162 270mm Qualitative Standard Filter Circle Grade 4, Case of 100 $72.25
AKM-9007-0163 320mm Qualitative Standard Filter Circle Grade 4, Case of 100 $104.59
AKM-9007-0164 400mm Qualitative Standard Filter Circle Grade 4, Case of 100 $178.90

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