Merck, 1019691000, Silica gel with indicator (orange gel),

• Moisture Management: Commonly found in desiccators, it protects hygroscopic chemicals and solids from moisture, ensuring sensitive materials stay intact during storage and experimentation.
• Chromatographic Adsorption: Serves as a stationary phase in chromatography, aiding in the effective separation and analysis of various chemical compounds.
• Equipment Protection: In laboratory settings, it absorbs excess humidity to prevent corrosion and damage to sensitive equipment, extending the lifespan of valuable instruments.
• Drying Agent for Gases and Liquids: Utilized in drying towers and absorption tubes, it efficiently removes moisture from gases and liquids, improving the accuracy of analytical results.

This orange indicator silica gel is a granular moisture-adsorbing material supplied in a 1–3 mm particle-size range. The material has a surface area of about 700 m²/g, a pore size of 2.0–2.5 nm and a listed water-absorption capacity of 250 g/kg at 20 °C. It is useful for laboratory desiccation and moisture-control applications where an indicator-containing silica gel is preferred, and it is suitable for EPA OTM-45. The 1 kg format can be used in laboratory drying containers, gas-conditioning setups or other controlled moisture-removal workflows compatible with the granule size. The product is supplied as silica gel rather than a chromatographic packed column.