VWR Celite® 512, medium filter aid, GPR RECTAPUR®

VWR Celite® 512, GPR RECTAPUR® is a calcined diatomaceous earth medium-grade filter aid designed for efficient solid–liquid separation and adsorption applications in laboratory and industrial environments. Manufactured to General Purpose Reagent (GPR) quality standards, Celite® 512 provides consistent porosity, high permeability, and reliable filtration performance.

Composed primarily of silicon dioxide (SiO₂), this medium filter aid is suitable for vacuum, gravity, and pressure filtration processes, as well as use as an adsorbent in column chromatography.

Key Features

• Medium-grade calcined diatomaceous earth
• High permeability and filtration efficiency
• Suitable for precoat and body feed filtration
• Low loss on ignition (≤0.4%)
• Consistent particle size distribution
• GPR RECTAPUR® quality

Chemical & Physical Information

• CAS Number: 91053-39-3
• Chemical Formula: SiO₂
• Molecular Weight: 60.08 g/mol
• pH (10% suspension, 25°C): 8.5 – 11.0
• Wet Density: ≤ 370 g/L
• Loss on Ignition (1000°C): ≤ 0.4%
• Particle Size (<75 µm): ≥ 90%

Applications

• Vacuum filtration (Büchner funnel)
• Precoat filtration systems
• Clarification of reaction mixtures
• Removal of fine particulates and catalysts
• Pharmaceutical and chemical processing
• Beverage and food clarification
• Column chromatography adsorbent
• Drying and filtration workflows

Advantages

• Improves filtration speed and clarity
• Prevents clogging of filter paper
• Forms uniform porous filter cake
• Chemically inert and thermally stable
• Suitable for routine laboratory filtration

Packaging Options

Storage & Handling

• Store at ambient temperature
• Avoid dust generation
• Use appropriate respiratory protection if necessary
• Refer to SDS for full safety guidance

VWR Celite® 512 GPR RECTAPUR® is a dependable medium filter aid offering consistent performance for laboratory filtration and chromatography applications. Its calcined diatomaceous earth composition ensures high permeability and reliable solid–liquid separation.

For research laboratories, quality control departments, and industrial filtration processes, Celite® 512 provides an efficient and versatile filtration enhancement solution.