Filter And Filter Paper

Product Details:

Qualitative Laboratory Filter Paper 46X57CM, Make - Whatman, CAT No. 1001-917

Additional Information:

• Delivery Time: 3 to 4 Days
• Packaging Details: 100Sheets/pkt

Product Details:

With our expertise and trustworthiness, we are engaged in offering an optimum quality range of Whatman 42 Filter Papers. Whatman quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. They are available in three formats designed to meet your specific needs.

Ashless: 0.007% ash maximum for Grades 40 to 44 and a maximum of 0.01% for the 589 Grades - very pure filters suitable for a wide range of critical analytical filtration procedures.

Hardened low ash: 0.015% ash maximum - treated with a strong acid to remove trace metals and produce high wet strength and chemical resistance. These filters are particularly suitable for Büchner filtration where the tough smooth surface of the filter makes it easy to recover precipitates.

Hardened ashless: 0.006% ash maximum - acid hardened to give high wet strength and chemical resistance with extremely low ash content. The tough surface makes these filters suitable for a wide range of critical filtration procedures.

Grade 42: 2.5 μm (slow filter paper)

• A world standard for critical gravimetric analysis with the finest particle retention of all Whatman cellulose filter papers. Typical analytical precipitates include barium sulfate, metastannic acid, and finely precipitated calcium carbonate.

Other Notes:

Field of Use: For internal research use only. Products are not intended for diagnostic use or resale.

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Keeping in mind ever-evolving requirements of our respected clients, we are offering a premium quality range of Whatman 1 Filter Paper. These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 1: 11 m (medium flow filter paper)
The most widely used filter paper for routine applications with medium retention and flow rate. 

This grade covers a wide range of laboratory applications and is frequently used for clarifying liquids. Traditionally the grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate.

In agriculture, it is used for soil analysis and seed testing procedures. In the food industry, Grade 1 is used for numerous routine techniques to separate solid foodstuffs from associated liquid or extracting liquid and is widely used in education for teaching simple qualitative analytical separations.

In air pollution monitoring, using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity measured photometrically. For gas detection, the paper is impregnated with a chromogenic reagent and color formation quantified by optical reflectance.

Other Notes:

• Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

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