Description
Specifications Table
Product Name – Molecular sieve, 4A × 1.5 × 3 mm LR
Quantity/Pack Size – 500 g
Form – Beads (1.5 × 3 mm)
Grade – Laboratory Reagent (LR)
Application – Moisture adsorption, gas drying, solvent purification
Product Overview
The 4A molecular sieve is a highly efficient desiccant designed for laboratory applications requiring precise moisture control. Comprising uniform 1.5 × 3 mm beads, this lab-grade sieve delivers exceptional adsorption capacity, making it ideal for drying gases, solvents, and liquids in research environments. Its crystalline aluminosilicate structure with a pore size of 4Å (angstroms) selectively traps water molecules while excluding larger organic compounds, ensuring purity in critical processes. The LR (Laboratory Reagent) grade guarantees minimal impurities, consistent performance, and compatibility with sensitive analytical procedures. Whether used in chromatography, gas purification, or solvent dehydration, this molecular sieve maintains stability across a wide temperature range, offering reliable results. Its reusability through thermal regeneration further enhances cost-effectiveness for long-term lab use. Engineered for durability, the beads resist attrition during handling, preserving their adsorption efficiency over repeated cycles.
FAQs
1. What is the pore size of this molecular sieve?
The 4A molecular sieve has a pore size of 4 angstroms (Å), which allows it to selectively adsorb water and other small molecules while excluding larger compounds.
2. Can this sieve be regenerated for reuse?
Yes, the 4A molecular sieve can be regenerated by heating it to 200–300°C for several hours to remove adsorbed moisture, restoring its adsorption capacity.
3. Is this compatible with organic solvents?
It is primarily used for drying organic solvents, but compatibility depends on the solvent type. Avoid using it with strong acids or bases, as they may degrade the sieve.
4. How should this molecular sieve be stored?
Store the sieve in an airtight container to prevent moisture absorption before use. Keep it in a cool, dry place away from direct sunlight.
5. What alternatives exist for larger molecule adsorption?
For adsorbing larger molecules, consider 5A or 13X molecular sieves, which have larger pore sizes (5Å and 10Å, respectively).
