Glass Vacuum Filter CLZZ-30

High-Volume Vacuum Filtration System for Aggressive Chemical Processing

The CLZZ-30 handles 30-liter batch volumes in borosilicate 3.3 glass construction. When you're scaling beyond the Glass Vacuum Filter CLZZ-20's 20-liter capacity, this unit eliminates split-batch processing. Direct integration with Glass reactor GRL-20CE output means single-step transfer from synthesis vessel to filtration without intermediate containers.

30-Liter Working Capacity Advantages

Batch efficiency scales directly with volume capacity. Processing entire reactor runs from the Glass reactor GRL-20CE or dual batches from smaller vessels reduces handling time and cross-contamination risk.

• Maximum vacuum pressure: 0.1 MPa prevents crystal structure damage and filter media breakthrough
• Temperature tolerance: 200°C maximum for hot filtrations requiring pre-heated glassware
• Unit weight: 5.5 kg allows single-operator setup with proper joint lubrication
• Thermal shock resistance: Borosilicate 3.3 specification handles rapid temperature differentials

Pair with Heating cooling system HR-70 for temperature-controlled filtrations. Maintaining 5-10°C during collection prevents thermally-sensitive compounds from degrading. Clear glass walls let you monitor precipitation progress and crystal formation without opening the system.

Industrial-Scale Laboratory Operations

Works with standard rotary vane or diaphragm vacuum pumps. Critical setup requirement: Install cold trap between pump intake and filter outlet. Solvent vapor ingress destroys pump oil and contaminates subsequent runs.

Vacuum application technique varies by precipitate morphology. Fine crystalline solids tolerate full vacuum immediately. Gelatinous precipitates require gradual pressure reduction - start at 0.02 MPa, increase over 2-3 minutes to prevent filter cake compression. Hot filtrations above 80°C need pre-warmed receiving flasks and funnel assemblies to avoid thermal shock fractures.

Post-filtration workflow connects to Rotary evaporator RE-2000A for solvent recovery from collected filtrate. Complete reaction-to-purification sequence: synthesis in reactor, vacuum filtration for solid-liquid separation, rotary evaporation for solvent removal, final drying under vacuum.

Chemical Resistance Performance Data

Borosilicate glass resists chlorinated solvents, aromatic hydrocarbons, concentrated acids, and most organic reagents. Exceptions requiring alternative materials: hydrofluoric acid etches glass surfaces, concentrated alkali solutions above pH 12 cause joint seizure from silicate formation.

Filter media selection by particle size:

• Coarse frits (40-60 μm pores): Crystalline precipitates, flow rates 50-100 mL/min
• Medium frits (10-15 μm pores): General laboratory applications, 20-40 mL/min
• Fine frits (4-5.5 μm pores): Colloidal suspensions, 5-15 mL/min with patience required

Maintenance protocol demands complete disassembly after each use. Rinse with process-compatible solvent, flush with acetone, air dry with joints separated. Stubborn residues need overnight immersion in chromic acid cleaning solution or alkaline detergent bath. Inspect ground glass joints under magnification before reassembly - hairline cracks propagate catastrophically under vacuum. Replace compromised components immediately rather than risk implosion cleanup.