Description
Specifications Table
Product Name – Poly(ethyleneimine), 50% in water BAKER™
Quantity/Pack Size – 1 kg
Form – Liquid (50% aqueous solution)
Grade – Laboratory Reagent
Application – Nucleic acid precipitation, surface coating, flocculation
Product Overview
Poly(ethyleneimine) (PEI), supplied as a 50% aqueous solution under the BAKER™ brand, is a highly branched, water-soluble polymer renowned for its strong cationic properties. This laboratory-grade reagent features a high density of primary, secondary, and tertiary amine groups, enabling exceptional binding capacity for anionic molecules. The 50% concentration ensures optimal solubility while maintaining stability during storage and handling. PEI’s branched structure provides superior performance in applications requiring electrostatic interactions, such as nucleic acid precipitation, where it efficiently condenses DNA/RNA for downstream processing. Its compatibility with aqueous systems makes it a versatile choice for surface modification, where it adheres strongly to substrates like glass, metals, and polymers, forming durable coatings. The solution’s low viscosity facilitates easy dispensing and mixing, while its neutral pH range minimizes compatibility issues with sensitive biological samples. As a BAKER™ product, this PEI solution undergoes rigorous quality control to ensure batch-to-batch consistency, with minimal impurities that could interfere with experimental reproducibility. The 1 kg packaging is designed for cost-effective bulk usage in research and development settings, featuring a secure seal to prevent contamination or evaporation. Whether used as a flocculant, transfection reagent, or adhesive promoter, this PEI solution delivers reliable performance across a wide range of laboratory protocols.
FAQs
1. What is the shelf life of Poly(ethyleneimine), 50% in water?
The solution remains stable for 24 months when stored unopened at room temperature in its original container. Avoid prolonged exposure to light or heat.
2. Can this PEI solution be diluted for lower concentration applications?
Yes, it can be diluted with deionized water to achieve working concentrations as low as 0.1%. Stir gently to maintain homogeneity, as high concentrations may increase viscosity.
3. Is this product compatible with cell culture applications?
While PEI is commonly used for transfection, this grade is not sterile or endotoxin-tested. For cell culture, additional filtration or sterilization may be required.
4. How does the branched structure differ from linear PEI in performance?
Branched PEI offers higher charge density and solubility but lower biodegradability compared to linear PEI. It’s preferred for applications requiring strong electrostatic interactions.
5. What precautions should be taken during handling?
Wear nitrile gloves, safety goggles, and a lab coat, as PEI can cause skin and eye irritation. Work in a fume hood if handling large volumes to avoid inhalation of vapors.
