Product Details
Qualitative cellulose filter papers perform separation by entrapping particulate matter within the random matrix of cellulose fibers throughout the depth of the media, making them suitable for methods requiring determination and identification of particulates in both liquids and gases. This natural fiber filter paper is commonly used to clarify liquid samples and is easier to use than flat filters when employed in a filter funnel due to its sharply creased prefolded pattern, which reduces preparation time. It is widely used for general laboratory separation and clarification applications, as well as for soil analysis methods. Quantitative cellulose filter papers are primarily designed for gravimetric analysis procedures, entrapping particulate within the random matrix of cellulose fibers, and they are extensively used for sample preparation for further testing by various instrumentation. These high-quality filter papers are manufactured from refined pulp and alpha cellulose linters, acid washed, and possess an extremely low ash content determined by dry method exposure at 900°C in a muffle furnace. Key attributes include filter media nomenclature serialized without grade indication, furnish defined as raw materials used in manufacturing, nominal retention of particulate at 98% efficiency in liquid, basis weight expressed in gram weight per meter squared at 8% moisture, thickness measured under 4 psi pressure using TAPPI method T411, and flat or fluted stock supplied in sheets, rolls, or die-cut parts with fluted patterns corresponding to 1/4 or 1/2 quadrant funnel folding. These cellulose filter papers comply with relevant laboratory standards, ensuring consistent performance and reliability. Warranty terms apply as specified by the manufacturer.
