Specifications Table

Product Name – Whatman Grade 20 Chromatography Paper
Quantity/Pack Size – 46x57CM (Pack of 100)
Form – Sheets
Grade – 20
Application – Qualitative chromatography, general lab separations

Product Overview

Whatman Grade 20 Chromatography Paper is a high-performance medium-flow paper engineered for consistent, reliable separations in qualitative chromatography applications. Manufactured from pure cellulose fibers, this paper ensures uniform capillary action, making it ideal for routine lab work where precision is critical. The medium retention and flow rate balance allow for clear separation of components without streaking or diffusion, ensuring reproducible results. Its acid-free composition prevents interference with sensitive samples, while the smooth surface minimizes background noise. The paper’s robust structure resists tearing during handling, even when wet, and maintains dimensional stability throughout the process. With a basis weight of 87 g/m², it offers an optimal combination of strength and absorbency. Each sheet undergoes rigorous quality control to meet strict purity standards, ensuring no contaminants affect your experiments. Whether used in ascending, descending, or radial chromatography, this paper delivers consistent performance, making it a trusted choice for labs demanding accuracy.

FAQs

1. What is the basis weight of Whatman Grade 20 Chromatography Paper?

The basis weight of this chromatography paper is 87 g/m², providing an optimal balance between strength and absorbency for reliable separations.

2. Can this paper be used for both ascending and descending chromatography?

Yes, Whatman Grade 20 is suitable for ascending, descending, and radial chromatography techniques due to its consistent flow rate and uniform capillary action.

3. Is this paper compatible with organic solvents?

The paper is designed for aqueous and mild organic solvent systems, but compatibility should be verified for specific solvent mixtures to avoid degradation.

4. How should this chromatography paper be stored to maintain quality?

Store the paper in a cool, dry environment, sealed in its original packaging to prevent moisture absorption and contamination.

5. What alternatives exist if Grade 20 is unavailable?

Whatman Grade 1 or Grade 3MM papers can serve as alternatives, though Grade 1 has a faster flow rate, and Grade 3MM is thicker with higher retention.