Cytiva - Whatman 1441-150 Quantitative Filter Paper Ashless
Quantitative Filter Paper Ashless (Ash 0.007%), circle, Dimensions: 150 mm, Grade: Grade 41, AirFlow rate:3.4 s/100 mL/in2, Basis Weight:85 g/m2, Burst Strength:0.020 bar wet burst, Flow rate:Fast, Tensile Strength:27.2 N/15 mm, Thickness:220 um (typical) Exact Match 28478-080

Cytiva - Whatman 5202-150 Filter Papers
Reeve Angel Brand Filter Papers Grade 202, 15 cm. Provides minimum filtration speed of coarse particles. The surfaced is creped, hence it has a greater true surface area than smooth surface filter paper of the same diameter. Exact Match 28317-284

Advantec MFS Inc.
Mfg Item # : N023115.0CM
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.

Advantec MFS Inc.
Mfg Item # : N0315.0CM
Advantec Quantitative Ashless Filter Papers are made from the highest quality alpha cotton cellulose. One critical step in the manufacturing process of these filter papers is acid washing. All grades are double acid washed in hydrochloric then hydrofluoric acid to reduce levels of SiO2, CaO, and Fe2O3. Following the acid wash, all papers are rinsed in ultrapure water to neutralize. Grade No. 4A Hardened is further treated with nitric acid. Following the acid wash, all papers are rinsed in ultrapure water to neutralize. Ash Content: 0.01% (except Grade No. 4A is 0.025%). Grade No. 3 Medium retention, fast flow rate paper with good chemical resistance and wet strength. Recommended for analysis of soils, fertilizers, cement, and minerals. Nominal Retention: 5 µm. Grade No. 5A Retains coarse and gelatinous ppt with high flow rates. Filter hydroxides, metalic aerosols, environmetnal monitoring, and determine silica content in steel. Nominal Retention: 7 µm. Grade No. 5B Retains medium size ppt such as CaCo3, PbSO4, AgCl. General purpose paper. Nominal Retention: 4 µm. Grade No. 5C High retention efficiency collecting fine ppt such as BaSO4 with slow flow rate. Gravimetric analysis and collecting particles that tend toward colloidal dispersion. Nominal Retention: 1 µm. Grade No. 6 Retains medium-fine particulates. Use for precision analysis of trace and precious metals, beverages, water. Nominal Retention: 3 µm. Grade No. 7 Highest purity paper for medium particulates. Fast flow rate. Recommended for precise gravimetric analysis of minute trace and precious metals. Nominal Retention: 4 µm. Grade No. 4A Hardened, smooth low ash paper with superior wet strength. Retains fine crystalline ppt with slow flow rate. Suitable for Buchner filtrations, high pressure, high chemical and pH resistance. Nominal Retention: 1 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 1442-150 Grade 42 Quantitative Filter Paper, Ashless
15.0cm diameter. For critical gravimetric analysis. Widely used for precipitates with tendencies toward colloidal dispersion. Suitable for gravity or low suction filtration. Fine porosity. Slow flow rate. 2.5um particle retention. Exact Match 28480-140

Cytiva - Whatman 1542-150 FILTER PAPER 2.7UM 15CM PK100 Exact Match 28297-398

VWR International 28331-048
VWR* Grade 315 Filter Paper 15.0cm VWR* Grade 315 Filter Paper, Crepe Fluted Circles, Folded, Qualitative, Diameter: 15.0 cm, particle retention: 25um, Ideal for gelatinous and coarse precipitates, Coarse porosity, Fast flow rate, Assorted sizes

Cytiva - Whatman 1202-150 Grade 2V Folded Filter Paper
15.0cm diameter. Widely used for general purpose filtration. For general chemistry and soil analysis methods. Medium porosity. Medium flow rate. 8um particle retention. Exact Match 28465-044

Cytiva - Whatman 10300112 Grade 589, White Ribbon, Quantitative Filter Paper
15.0cm diameter. Rough surfaced ashless paper for quantitative gravimetric analysis, chromatography, and electrophoretic work. Medium porosity. Medium flow rate. 8-12um particle retention. Exact Match 28427-103

VWR International 28310-128
VWR* Grade 413 Filter Paper, Qualitative 15.0cm diameter. For routine lab work. Suitable for student requirements in general chemistry. Suitable for filtration of aluminum phosphate, barium carbonate, lead chromate, and more. Medium porosity. Medium flow rate. 5um particle retention.