Cytiva - Whatman 1001-090 Grade 1 Filter Paper
9.0cm diameter. For a wide range of laboratory applications, liquid clarification, gas filtration, air pollution analysis, and soil analysis. Medium porosity. Medium flow rate. 11um particle retention. Exact Match 28450-081

Cytiva - Whatman 1002-090 Grade 2 Filter Paper
9.0cm diameter. More retentive, slower, and more absorbent than Grade 1 Filter Paper by Whatman*. For general-purpose lab applications, monitoring specific contaminants in the atmosphere, and soil testing. Medium porosity. Medium flow rate. 8um particle retention. Exact Match 28455-085

Cytiva - Whatman 1005-090 Grade 5 Filter Paper
9.0cm diameter. Very useful in clarification of cloudy solutions. Widely used in water analysis. Fine porosity. Slow flow rate. 2.5um particle retention. Exact Match 28462-069

Cytiva - Whatman 1004-090 Grade 4 Filter Paper
9.0cm diameter. For rapid filtering with excellent retention of coarse particles and gelatinous precipitates. Good rapid filter for cleanup of biological fluids or organic extracts. For air pollution monitoring. Coarse porosity. Fast flow rate. 20-25um particle retention. Exact Match 28460-063

PAPER FILTER Qualitative High Purity Grade 613 9 cm circle 100/pk Exact Match 71440-032

Advantec MFS Inc.
Mfg Item # : N019.0CM
Advantec Qualitative Filter Papers are made of 100% cotton linter cellulose. Primarily used for clarifying and removing precipitates (ppt) and preparation for quantitative analysis. These papers can be used over a pH range from 0-12 and a maximum temperature of 120°C. Ash content of 0.1%. Papers have smooth surface, normal hardness (except Grade No. 101 have a creped surface). Grade No. 1 Retains coarse and gelatinous ppt with fast flow rate. Recommended for gas filtration, air pollution analysis, and general purpose. Nominal Retention: 6 µm. Grade No. 2 Retains medium crystalline ppt with high flow rate. General purpose filter. Nominal Retention: 5 µm. Grade No. 231 Retains crystalline ppt, moderate flow. Thin and slightly more retentive than No.1 general purpose paper. Nominal Retention: 5 µm. Grade No. 232 Collects medium to medium-fine ppt. Slow flow rate. Thin retentive paper. Nominal Retention: 3 µm. Grade No. 131 High retention efficiency for fine crystalline ppt like BaSO4. Slow flow. Higher wet strength and will withstand suction. Nominal Retention: 3 µm. Grade No. 235 Highest retention efficiency collecting very fine ppt. Very slow flow rate. Nominal Retention: 1 µm. Grade No. 101 Creped filter paper captures large particles. Fast flow rate. Excellent for seed germination and viscous fluids. Nominal Retention: 7 µm. Please Note: ALL Advantec items have a maximum 48 hour cancellation window. Any cancellations AFTER the 48 hour window will incur a restocking fee equal to the cost of the product.

Cytiva - Whatman 1003-090 Grade 3 Filter Paper
9.0cm diameter. Slightly grained surface. Moderately thick. Highly absorbent. Highly suitable for use in Buchner funnels. Medium porosity. Medium flow rate. 6um particle retention. Exact Match 28456-065