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Whatman™ Qualitative Cellulose Filter Paper

By Whatman/Cytiva
Whatman™ Qualitative Cellulose Filter Paper

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters, also available, give improved flow rate and increased loading capacity compared to equivalent flat filters. Whatman provides a wide range of qualitative filters to meet your specific needs. Wet strengthened qualitative filters (Grade 91, Student Grade/Grade93, Grade 113, Grade 114) contain a small quantity of a chemically stable resin to give improved wet strength. This does not introduce any significant impurities into the filtrate but because the resin contains nitrogen, these grades should not be used in Kjeldahl estimations.

Grade 114

20-25 µm. Half the thickness of Grade 113, this is a very strong filter with a smooth surface for easy recovery of precipitates. It is suitable for coarse or gelatinous precipitates. Also available prepleated as Grade 114V.

           
Cat.No. Name Diam PK    
15-1114-090 Grade 114 Qualitative Filters 90mm $27.82
100/PK		 Add To Favorites
15-1114-125 Grade 114 Qualitative Filters 125 $51.28
100/PK		 Add To Favorites
15-1114-150 Grade 114 Qualitative Filters 150 $63.16
100/PK		 Add To Favorites
15-1114-185 Grade 114 Qualitative Filters 185 $93.36
100/PK		 Add To Favorites
15-1114-240 Grade 114 Qualitative Filters 240 $151.34
100/PK		 Add To Favorites
15-1114-400 Grade 114 Qualitative Filters 400 $458.54
100/PK		 Add To Favorites

Qualitative Filter Circles Folded (Pleated) Grade 2V

8 µm. Widely used for general purpose filtration. Slightly more retentive than No. 1. Has excellent particle retention and a good filtration speed and loading capacity.

           
Cat.No. Name Diam PK    
15-1202-125 Pleated Qual Filt Circles, Grade 2V 125mm $131.82
100/PK		 Add To Favorites
15-1202-150 Pleated Qual Filt Circles, Grade 2V 150 $147.32
100/PK		 Add To Favorites
15-1202-185 Pleated Qual Filt Circles, Grade 2V 185 $165.32
100/PK		 Add To Favorites
15-1202-240 Pleated Qual Filt Circles, Grade 2V 240 $224.70
100/PK		 Add To Favorites
15-1202-270 Pleated Qual Filt Circles, Grade 2V 270 $277.06
100/PK		 Add To Favorites
15-1202-320 Pleated Qual Filt Circles, Grade 2V 320 $354.52
100/PK		 Add To Favorites
15-1202-385 Pleated Qual Filt Circles, Grade 2V 385 $528.84
100/PK		 Add To Favorites
15-1202-400 Pleated Qual Filt Circles, Grade 2V 400 $590.38
100/PK		 Add To Favorites
15-1202-500 Pleated Qual Filt Circles, Grade 2V 500 $681.20
100/PK		 Add To Favorites

Qualitative Filter Circles Folded (Pleated) Grade 113V

30 µm. Very thick and strong filter with creped surface for extremely high loading capacity, particularly in folded form. Fastest flow rate of any qualitative grade. Ideal for coarse particles and gelatinous precipitates.

           
Cat.No. Name Diam PK    
15-1213-125 Pleated Qual Filt Circ Grade 113V 125mm $290.88
100/PK		 Add To Favorites
15-1213-150 Pleated Qual Filt Circ Grade 113V 150 $173.04
100/PK		 Add To Favorites
15-1213-185 Pleated Qual Filt Circ Grade 113V 185 $240.92
100/PK		 Add To Favorites
15-1213-240 Pleated Qual Filt Circ Grade 113V 240 $328.14
100/PK		 Add To Favorites
15-1213-270 Pleated Qual Filt Circ Grade 113V 270 $398.46
100/PK		 Add To Favorites
15-1213-320 Pleated Qual Filt Circ Grade 113V 320 $476.10
100/PK		 Add To Favorites
15-1213-500 Pleated Qual Filt Circ Grade 113V 500 $966.86
100/PK		 Add To Favorites

Qualitative Filter Circles Folded (Pleated) Grade 114V

25 µm. Strong filter with very fast flow rate. Ideal for coarse particles and gelatinous precipitates. Smooth surface.

           
Cat.No. Name Diam PK    
15-1214-125 Pleated Qual Filt Circ Grade 114V 125mm $147.32
100/PK		 Add To Favorites
15-1214-150 Pleated Qual Filt Circ Grade 114V 150 $162.76
100/PK		 Add To Favorites
15-1214-185 Pleated Qual Filt Circ Grade 114V 185 $193.68
100/PK		 Add To Favorites
15-1214-240 Pleated Qual Filt Circ Grade 114V 240 $319.36
100/PK		 Add To Favorites
15-1214-320 Pleated Qual Filt Circ Grade 114V 320 $410.18
100/PK		 Add To Favorites

Qualitative Standard Filter Sheets

           
Cat.No. Name Size PK    
15-1001-917 Grade 1 460 x 570mm $389.68
100/PK		 Add To Favorites
15-1001-918 Grade 1 460 x 570 $1750.62
500/PK		 Add To Favorites
15-1002-917 Grade 2 460 x 570 $593.30
100/PK		 Add To Favorites
15-1002-931 Grade 2 580 x 680 $729.54
100/PK		 Add To Favorites
15-1003-917 Grade 3 460 x 570 $920.00
100/PK		 Add To Favorites
15-1004-917 Grade 4 460 x 570 $528.84
100/PK		 Add To Favorites

Grade 1

11µm - a medium retention and flow rate filter for routine applications, including soil analysis and seed testing procedures, food industry testing, air pollution monitoring and gas detection.

           
Cat.No. Name Diam PK    
15-1001-6508 Grade 1 Qualitative Filters 10 $78.20
500/PK		 Add To Favorites
15-1001-329 Grade 1 Qualitative Filters 30 $17.70
100/PK		 Add To Favorites
15-1001-032 Grade 1 Qualitative Filters 32mm $17.70
100/PK		 Add To Favorites
15-1001-042 Grade 1 Qualitative Filters 42.5 $17.70
100/PK		 Add To Favorites
15-1001-047 Grade 1 Qualitative Filters 47 $17.70
100/PK		 Add To Favorites
15-1001-055 Grade 1 Qualitative Filters 55 $20.20
100/PK		 Add To Favorites
15-1001-070 Grade 1 Qualitative Filters 70 $20.20
100/PK		 Add To Favorites
15-1001-085 Grade 1 Qualitative Filters 85 $21.98
100/PK		 Add To Favorites
15-1001-090 Grade 1 Qualitative Filters 90 $24.90
100/PK		 Add To Favorites
15-1001-110 Grade 1 Qualitative Filters 110 $30.24
100/PK		 Add To Favorites
15-1001-125 Grade 1 Qualitative Filters 125 $30.24
100/PK		 Add To Favorites
15-1001-150 Grade 1 Qualitative Filters 150 $45.32
100/PK		 Add To Favorites
15-1001-185 Grade 1 Qualitative Filters 185 $63.00
100/PK		 Add To Favorites
15-1001-240 Grade 1 Qualitative Filters 240 $100.90
100/PK		 Add To Favorites
15-1001-270 Grade 1 Qualitative Filters 270 $123.60
100/PK		 Add To Favorites
15-1001-320 Grade 1 Qualitative Filters 320 $171.58
100/PK		 Add To Favorites
15-1001-385 Grade 1 Qualitative Filters 385 $282.76
100/PK		 Add To Favorites
15-1001-325 Grade 1 Qualitative Filters 25 $17.70
100/PK		 Add To Favorites
15-1001-400 Grade 1 Qualitative Filters 400 $282.76
100/PK		 Add To Favorites
15-1001-500 Grade 1 Qualitative Filters 500 $354.52
100/PK		 Add To Favorites

Grade 2

8 µm. More absorbent and slightly more retentive with a slower filtration speed than Grade 1. Available prepleated as Grade 2V. Used for monitoring specific contaminants in the atmosphere and in soil testing.

           
Cat.No. Name Diam PK    
15-1002-042 Grade 2 Qualitative Filters 42.5mm $21.98
100/PK		 Add To Favorites
15-1002-055 Grade 2 Qualitative Filters 55 $24.90
100/PK		 Add To Favorites
15-1002-070 Grade 2 Qualitative Filters 70 $27.82
100/PK		 Add To Favorites
15-1002-090 Grade 2 Qualitative Filters 90 $32.92
100/PK		 Add To Favorites
15-1002-110 Grade 2 Qualitative Filters 110 $32.90
100/PK		 Add To Favorites
15-1002-125 Grade 2 Qualitative Filters 125 $40.46
100/PK		 Add To Favorites
15-1002-150 Grade 2 Qualitative Filters 150 $52.90
100/PK		 Add To Favorites
15-1002-185 Grade 2 Qualitative Filters 185 $75.80
100/PK		 Add To Favorites
15-1002-240 Grade 2 Qualitative Filters 240 $123.60
100/PK		 Add To Favorites
15-1002-270 Grade 2 Qualitative Filters 270 $164.00
100/PK		 Add To Favorites
15-1002-320 Grade 2 Qualitative Filters 320 $253.50
100/PK		 Add To Favorites
15-1002-385 Grade 2 Qualitative Filters 385 $338.40
100/PK		 Add To Favorites
15-1002-500 Grade 2 Qualitative Filters 500 $0.00
100/PK
CALL FOR PRICE		 Add To Favorites

Grade 3

6 µm. A thick filter with good loading capacity, fine particle retention and increased strength. The extra thickness gives increased wet strength and makes the filter suitable for use in Büchner funnels. The high absorbency is particularly valuable when the filter is used as a sample carrier.

           
Cat.No. Name Diam PK    
15-1003-055 Grade 3 Qualitative Filters 55 $27.02
100/PK		 Add To Favorites
15-1003-070 Grade 3 Qualitative Filters 70 $31.96
100/PK		 Add To Favorites
15-1003-090 Grade 3 Qualitative Filters 90 $41.64
100/PK		 Add To Favorites
15-1003-110 Grade 3 Qualitative Filters 110 $49.02
100/PK		 Add To Favorites
15-1003-125 Grade 3 Qualitative Filters 125 $61.52
100/PK		 Add To Favorites
15-1003-150 Grade 3 Qualitative Filters 150 $88.26
100/PK		 Add To Favorites
15-1003-185 Grade 3 Qualitative Filters 185 $114.98
100/PK		 Add To Favorites
15-1003-240 Grade 3 Qualitative Filters 240 $198.28
100/PK		 Add To Favorites
15-1003-320 Grade 3 Qualitative Filters 320 $398.46
100/PK		 Add To Favorites
15-1003-323 Grade 3 Qualitative Filters 23 $24.90
100/PK		 Add To Favorites

Grade 4

20-25 µm. High flow rate with good retention of larger particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Also used as a rapid filter for routine cleanup of biological fluids or organic extracts and for rapid air pollution monitoring where collection of fine particles is not critical.

           
Cat.No. Name Diam PK    
15-1004-042 Grade 4 Qualitative Filters 42.5mm $17.70
100/PK		 Add To Favorites
15-1004-047 Grade 4 Qualitative Filters 47 $20.20
100/PK		 Add To Favorites
15-1004-055 Grade 4 Qualitative Filters 55 $21.98
100/PK		 Add To Favorites
15-1004-070 Grade 4 Qualitative Filters 70 $21.98
100/PK		 Add To Favorites
15-1004-090 Grade 4 Qualitative Filters 90 $27.82
100/PK		 Add To Favorites
15-1004-110 Grade 4 Qualitative Filters 110 $35.16
100/PK		 Add To Favorites
15-1004-125 Grade 4 Qualitative Filters 125 $45.32
100/PK		 Add To Favorites
15-1004-150 Grade 4 Qualitative Filters 150 $57.98
100/PK		 Add To Favorites
15-1004-185 Grade 4 Qualitative Filters 185 $85.80
100/PK		 Add To Favorites
15-1004-240 Grade 4 Qualitative Filters 240 $146.28
100/PK		 Add To Favorites
15-1004-270 Grade 4 Qualitative Filters 270 $191.86
100/PK		 Add To Favorites
15-1004-320 Grade 4 Qualitative Filters 320 $275.44
100/PK		 Add To Favorites
15-1004-400 Grade 4 Qualitative Filters 400 $408.72
100/PK		 Add To Favorites

Grade 5

2.5 µm. The most efficient qualitative filter. Used for collecting small particles and has a slow flow rate. Suitable for chemical analysis clarifying cloudy suspensions and for water and soil analysis.

           
Cat.No. Name Diam PK    
15-1005-042 Grade 5 Qualitative Filters 42.5mm $19.04
100/PK		 Add To Favorites
15-1005-047 Grade 5 Qualitative Filters 47 $22.06
100/PK		 Add To Favorites
15-1005-055 Grade 5 Qualitative Filters 55 $22.06
100/PK		 Add To Favorites
15-1005-070 Grade 5 Qualitative Filters 70 $27.02
100/PK		 Add To Favorites
15-1005-090 Grade 5 Qualitative Filters 90 $33.70
100/PK		 Add To Favorites
15-1005-110 Grade 5 Qualitative Filters 11 $44.02
100/PK		 Add To Favorites
15-1005-125 Grade 5 Qualitative Filters 125 $57.14
100/PK		 Add To Favorites
15-1005-150 Grade 5 Qualitative Filters 150 $82.04
100/PK		 Add To Favorites
15-1005-185 Grade 5 Qualitative Filters 185 $120.12
100/PK		 Add To Favorites
15-1005-240 Grade 5 Qualitative Filters 240 $198.28
100/PK		 Add To Favorites
15-1005-320 Grade 5 Qualitative Filters 320 $339.86
100/PK		 Add To Favorites
15-1005-325 Grade 5 Qualitative Filters 25 $29.54
100/PK		 Add To Favorites

Grade 6

3 µm. Twice as fast as Grade 5 with similar particle retention. Often specified for boiler water analysis.

           
Cat.No. Name Diam PK    
15-1006-042 Grade 6 Qualitative Filters 42.5mm $20.20
100/PK		 Add To Favorites
15-1006-070 Grade 6 Qualitative Filters 70 $21.98
100/PK		 Add To Favorites
15-1006-090 Grade 6 Qualitative Filters 90 $32.92
100/PK		 Add To Favorites
15-1006-110 Grade 6 Qualitative Filters 110 $42.48
100/PK		 Add To Favorites
15-1006-125 Grade 6 Qualitative Filters 125 $44.34
100/PK		 Add To Favorites
15-1006-150 Grade 6 Qualitative Filters 150 $80.66
100/PK		 Add To Favorites
15-1006-185 Grade 6 Qualitative Filters 185 $118.48
100/PK		 Add To Favorites
15-1006-240 Grade 6 Qualitative Filters 240 $196.74
100/PK		 Add To Favorites

Grade 91

>10 µm. A general-purpose crêped filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and in pharmaceutical laboratories for routine filtration.

           
Cat.No. Name Diam PK    
15-1091-185 Grade 91 Qualitative Filters 185mm $445.34
1000/PK		 Add To Favorites

Student Grade/Grade 93

>10 µm. Widely used in universities, colleges and schools for general laboratory filtration and coarse sample preparation. Available in a dispenser pack, which can be attached to the wall, placed on a shelf either upright or flat and used as a normal carton. Each dispenser pack contains 50 envelopes of 25 circles each.

           
Cat.No. Name Diam PK    
15-1093-111 Student Grade/Grade 93 Qual Filters 110mm $243.76
1250/PK		 Add To Favorites
15-1093-126 Student Grade/Grade 93 Qual Filters 125 $426.30
1250/PK		 Add To Favorites

Grade 113

30 µm. A creped filter with high loading capacity and the fastest flow rate of any qualitative grade. This is the thickest filter in the range and is extremely strong. Grade 113 is ideal for use with coarse or gelatinous precipitates. It is available prepleated as Grade 113V.

           
Cat.No. Name Diam PK    
15-1113-090 Grade 113 Qualitative Filters 90mm $39.56
100/PK		 Add To Favorites
15-1113-110 Grade 113 Qualitative Filters 110 $44.02
100/PK		 Add To Favorites
15-1113-125 Grade 113 Qualitative Filters 125 $57.14
100/PK		 Add To Favorites
15-1113-150 Grade 113 Qualitative Filters 150 $79.10
100/PK		 Add To Favorites
15-1113-185 Grade 113 Qualitative Filters 185 $120.12
100/PK		 Add To Favorites
15-1113-240 Grade 113 Qualitative Filters 240 $186.26
100/PK		 Add To Favorites
15-1113-320 Grade 113 Qualitative Filters 320 $335.48
100/PK		 Add To Favorites

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