Cytiva - Whatman 1002-150 Grade 2 Filter Paper
15.0cm 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 28455-142

Cytiva - Whatman 1004-150 Qualitative Filter Paper Standard Grade
Qualitative Filter Paper Standard Grade, Circle, Diameter: 150mm, grade 4, AirFlow rate:3.7 s/100 ml/in2, Ash Content: 0.06% Basis Weight:96 g/m2, Flow rate:Very fast, Particle retention:25 um, Tensile Strength: 28.4 N/15 mm, Thickness:205 um (typical) Exact Match 28460-120

Cytiva - Whatman 1005-150 Grade 5 Filter Paper
15.0cm diameter. Very useful in clarification of cloudy solutions. Widely used in water analysis. Fine porosity. Slow flow rate. 2.5um particle retention. Exact Match 28462-126

Ahlstrom manufactures a series of extremely high purity, acid washed filter papers designed for use in analytical and gravimetric analysis. The quantitative grades are manufactured from top quality cotton linters using ultra-pure, reverse-osmosis water and are further treated with dilute acid to remove any remaining organic and inorganic impurities. All quantitative grades are manufactured in a strictly controlled environment that ensures high uniformity and high purity from filter to filter. Quantitative analysis Low ash content 0.007% (Acid-wash treated) High wet-strength Consistent performance Custom cut Bulk packaging Ashless Grades (Ash 0.007%) These standard ashless grades are high purity filter papers suitable for routine quantitative gravimetric techniques and in the preparation of samples for use in analysis involving instrumental techniques. Ahlstrom 74: 2.0µm – Medium Speed This grade has medium flow rate and good particle retention and is the most commonly used acidwashed filter. Ahlstrom 74 covers a wide range of general ashless filtration applications. It is used for gravimetric analysis of numerous components (e.g.: cements, copper, clay, bismuth, silicon, iron) found in heavy industries such as construction, mining or steel. Ahlstrom 74 is also used as a high purity filter for speedy filtering of trace elements such as silver chromate, lead sulfate, zinc and ammonium hydroxides. Ahlstrom 74 is also found in general soil analysis for separating solid from aqueous extracts. Grade: 74 Retention (µm): 2.0 Filtration Speed (Herzberg sec/100mls): 229 Filtration Speed Rapidity (mls/min): 30 Loading Capacity: Medium

Cytiva - Whatman 1002-147 Filter Paper Grade 2 IP
Whatman Grade 2 IP, 15cm, 100/pk, ignition propensity filter paper for cigarette testing Exact Match 89033-092

Cytiva - Whatman 1003-150 Grade 3 Filter Paper
15.0cm 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 28456-123