Description
Specifications Table
Product Name – Silica gel non-indicating, coarse LR
Quantity/Pack Size – 1 kg
Form – Coarse granules
Grade – LR (Laboratory Reagent)
Application – Moisture absorption, desiccant, drying agent
Product Overview
Silica gel non-indicating coarse LR is a highly porous, amorphous form of silicon dioxide designed for superior moisture absorption without color change. Its coarse granular structure ensures optimal airflow and efficient drying in laboratory environments. This LR-grade silica gel is chemically inert, non-toxic, and reusable, making it a cost-effective solution for long-term moisture control. The high surface area (typically 700-800 m²/g) enables rapid adsorption of water vapor, maintaining dry conditions in sealed containers, desiccators, and storage cabinets. Unlike indicating silica gel, this non-indicating variant remains white throughout its lifecycle, eliminating the need for visual saturation checks while delivering consistent performance. Its thermal stability (up to 180°C) allows for regeneration through heating, extending its usability. The coarse particle size (2-5 mm) prevents dust formation and ensures easy handling during lab operations. This product meets stringent laboratory standards for purity and is free from additives, ensuring compatibility with sensitive applications where chemical interference must be avoided.
FAQs
1. How does non-indicating silica gel differ from indicating types?
Non-indicating silica gel remains white regardless of moisture saturation, while indicating types change color (e.g., blue to pink) when exhausted. This variant is preferred when visual monitoring isn’t required or could interfere with experiments.
2. Can this silica gel be regenerated after use?
Yes, it can be reactivated by heating in an oven at 120-150°C for 2-4 hours until fully dried. Allow it to cool in a desiccator before reuse to prevent reabsorption of ambient moisture.
3. What is the typical moisture absorption capacity?
Under standard conditions (25°C, 50% RH), it absorbs up to 30-35% of its weight in moisture. Capacity may vary with temperature and humidity levels.
4. Is this silica gel compatible with food or pharmaceutical storage?
While chemically inert, this LR-grade product is not certified for direct food contact. For pharmaceutical or food-grade applications, use silica gel specifically labeled as such.
5. How should unused silica gel be stored to maintain effectiveness?
Store in airtight containers or sealed bags away from humidity. Keep the original packaging tightly closed until use to prevent premature saturation.
