GR615 Filter Paper Circles 100 Circles/PK. 100PK/CS. 15.00cm diameter circles. Qualitative High Purity Filter Paper. Fast filtration speed/abs. Weight 70g/m2 Thickness 0.26mm Herzberg 29sec/100ml Rapidity 235ml/min Capillary Rise 32mm Retention 25um Creped surface 70% cotton/30% wood fiber. Exact Match 38004-120

Cytiva - Whatman 1001-150 Qualitative Filter Paper 180um
Qualitative Filter Paper Standard Grade 1, circle, Dimensions: 150mm, AirFlow rate:10.5 s/100 ml/in2, Ash Content: 0.06%, Basis Weight:88 g/m2, Burst Strength: 0.020 bar Wet Burst Exact Match 28450-150

Cytiva - Whatman 1440-150 Grade 40 Quantitative Filter Paper, Ashless
15.0cm 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 28475-106

GR 613 Filter Paper Circles 100 Circles/PK. 100PK/CS. 15.00cm diameter circles. Qualitative High Purity Filter Paper. Medium filtration speed abs. Weight 70g/m2 Thickness 0.17mm Herzberg 114sec/100ml Rapidity 60ml/min Capillary Rise 25mm Retention 6um smooth 70% cotton/30% wood fiber. Exact Match 71440-014

Advantec MFS Inc.
Mfg Item # : N05B15.0CM
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.

VWR International 28320-121
VWR* Grade 415 Filter Paper, Qualitative, Crepe 15.0cm 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.

Cytiva - Whatman 2200-150 1 PS Water Repellent Phase Separating Paper
15.0cm diameter. Silicone impregnated paper functions as a rapid phase separator in place of conventional separatory funnels. Paper retains aqueous phase and passes through hydrophobic phase. Medium porosity. Medium flow rate. 11um particle retention. Exact Match 28491-168

Cytiva - Whatman 1541-150 Grade 541 Quantitative Filter Paper, Ashless
15.0cm diameter. Hardened. For fast filtration of gelatinous precipitates and coarse particles from alkaline/acid solutions during gravimetric analysis. High wet-strength, high purity. Coarse porosity. Fast flow rate. 20-25um particle retention. Exact Match 28479-107

Cytiva - Whatman 10300212 Quantitative Filter Paper
FILTER PAPER 589/3 BLUE RIBBON 150MM PK100 Exact Match 89233-654

FILTER PAPER Electrophoresis/Blotting Thin Grade 601 15 cm circle 100/pk Exact Match 47745-818