Cytiva - Whatman 1440-185 Grade 40 Quantitative Filter Paper, Ashless
18.5cm diameter. For gravimetric analyses of cement, clay, iron, and steel, as a primary filter in soil analysis, for determination of sediment in milk, and to clean prior to AA spectrophotometry. Medium porosity. Medium flow rate. 8um particle retention. Exact Match 28475-128

Advantec MFS Inc.
Mfg Item # : N023218.5CM
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.

FILTER PAPER Qualitative High Purity Grade 642 18.5 cm circle 100/pk Exact Match 47745-806

VWR International 28333-065
VWR* Grade 313, Fluted Circles, Folded, Qualitative 18.5cm diameter. Use for drugs, pharmaceuticals, liquors, tinctures, chromatography, and protein-free filtrations in the clinical laboratory. Medium Fine porosity. Medium flow rate. 5um particle retention.

Cytiva - Whatman 1002-185 Grade 2 Filter Paper
18.5cm 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 28455-164

Qualitative Filter Paper 25 Um Fast Speed Exact Match 97058-884

VWR International 28320-143
VWR* Grade 415 Filter Paper, Qualitative, Crepe 18.5cm diameter. Good for coarse precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide, magnesium hydroxide, and more. Coarse porosity. Fast flow rate. 25um particle retention.

FILTER PAPER Qualitative Wet-Strength Grade 962 18.5 cm circle 100/pk Exact Match 47749-804

Cytiva - Whatman 1004-185 Grade 4 Filter Paper
18.5cm 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 28460-142