Ahlstrom 0550-1850 Quantitative Filter Paper, 15 Micron, Fast Flow, Grade 55, 18.5cm Diameter (Pack of 100)

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. Hardened ashless grades (ash 0.006 percent): These specially treated hardened ashless grades are available for critical quantitative analytical techniques requiring increased wet-strength and handling capacity. These high purity filter papers have a tough, smooth surface free of loose fibers and are ideal for collecting wet precipitates. Each grade offers a convenient combination of particle retention and flow rate and are generally used because of their high chemical resistance to strong acid and alkali. Ahlstrom 55: 15 micrometer - fast speed: This is a fast filtering grade for gravimetric analysis of coarse particles and gelatinous precipitates (i.e.: aluminum and zirconium hydroxides) in acid and alkali solutions. Ahlstrom 55 is also used in air and foodstuffs analysis and for chloride and phosphorous in cement, coal and coke. 31 sec/100mls Filtration speed herzberg. 220 mls/min Filtration speed rapidity. Medium loading capacity.

• FILTER PAPER^ Quantitative, Ashless-Hardened, Grade 75, 18
• 5 cm circle, 100/pk This listing is for Box of 100