ROCKER Chemker 600 Corrosion-Resistant Diaphragm Vacuum Pump

Overview

The ROCKER Chemker 600 is an oil-free, corrosion-resistant diaphragm vacuum pump engineered for demanding laboratory environments where chemical compatibility, operational reliability, and long-term maintenance-free performance are critical. Based on positive displacement via elastomeric diaphragm actuation, it generates vacuum without lubricating oil—eliminating oil carryover, vapor contamination, or scheduled oil changes. Its core architecture isolates all gas-path components—including diaphragms, valves, and chamber surfaces—in chemically inert polytetrafluoroethylene (PTFE), ensuring stable performance when handling aggressive vapors such as hydrochloric acid, nitric acid, acetic acid, organic solvents, and alkaline fumes. Designed for continuous-duty cycles with frequent start-stop operation, the Chemker 600 integrates a high-vacuum startup capability that maintains consistent suction pressure across variable load conditions—a key requirement for integration with rotary evaporators, vacuum ovens, filtration manifolds, and solvent purification systems.

Key Features

• Full PTFE-wetted path construction for broad chemical resistance to acidic, basic, and organic vapors
• Oil-free diaphragm mechanism ensures zero hydrocarbon contamination and eliminates routine lubrication
• Integrated thermal cut-off switch automatically de-energizes the motor at elevated internal temperatures and re-engages upon safe cooldown—enhancing equipment longevity and safety compliance
• Direct-drive motor coupling minimizes mechanical losses and vibration; low-stroke diaphragm motion contributes to acoustic performance ≤60 dB(A)
• CE-marked per EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU, confirming conformity with essential health and safety requirements
• Compact footprint (350 × 154 × 225 mm) and lightweight design (13.2 kg) support benchtop integration in space-constrained labs

Sample Compatibility & Compliance

The Chemker 600 is validated for use with corrosive process streams commonly encountered in analytical sample preparation, pharmaceutical synthesis, and materials science workflows. Its PTFE-sealed gas path resists degradation from halogenated solvents (e.g., chloroform, DCM), strong acids (e.g., HCl, HNO₃), and caustic bases (e.g., NaOH, KOH), enabling reliable vacuum generation during solvent removal, lyophilization support, or vacuum-assisted crystallization. While not certified to ISO 8573 for compressed air purity, its oil-free operation inherently satisfies ISO 8573-1 Class 0 requirements for contaminant-free vacuum supply. The unit complies with IEC 61000-6-3 (EMC emission limits) and meets RoHS 2011/65/EU material restrictions. For GLP/GMP-regulated laboratories, its stable vacuum output and thermal safety interlock support documented process consistency under audit conditions.

Software & Data Management

As a standalone analog vacuum source, the Chemker 600 does not incorporate digital controllers, onboard data logging, or network connectivity. It operates via a front-panel toggle switch and requires no firmware updates or driver installation. However, its predictable vacuum profile (60 mbar ultimate pressure, ±5% repeatability over 1,000-hour service life) enables seamless integration with third-party instrumentation that monitors vacuum level via external pressure transducers (e.g., capacitance manometers or piezoresistive sensors). When used with programmable lab equipment—such as automated rotary evaporators or vacuum-controlled reaction stations—the pump’s rapid response time (<3 s to reach 90% of max flow) and stable steady-state output facilitate reproducible process parameter execution. No FDA 21 CFR Part 11 functionality is provided, as the device lacks user-accessible configuration storage or electronic audit trails.

Applications

• Solvent removal and concentration via rotary evaporation under mild to moderate vacuum
• Vacuum-assisted filtration of aggressive aqueous or organic suspensions (e.g., acid-digested environmental samples)
• Drying of moisture- or oxygen-sensitive compounds in vacuum desiccators or vacuum ovens
• Supporting Schlenk line operations requiring inert atmosphere purging and vacuum transfer
• Gas scavenging in catalytic hydrogenation or palladium-coupling reactions involving volatile byproducts
• Sample preparation for ICP-MS, GC-MS, or HPLC where hydrocarbon-free vacuum is mandatory

FAQ

Is the Chemker 600 suitable for continuous 24/7 operation?
Yes—it is rated for continuous duty with built-in thermal protection. However, sustained operation above ambient temperature >35°C may reduce service interval; ensure adequate ventilation around the rear exhaust vent.
Can this pump handle water vapor or condensable vapors?
It tolerates intermittent exposure to water vapor but is not designed for high-humidity or saturated steam applications. Use a cold trap or condenser upstream if pumping large volumes of condensable solvents.
What maintenance is required?
No oil changes or valve replacements are needed within the first 5,000 operating hours. Periodic inspection of inlet hose integrity and PTFE diaphragm visual condition (every 12 months) is recommended.
Does it meet ISO or ASTM standards for vacuum performance?
While not formally certified to ISO 21028-1 or ASTM D3924, its measured ultimate vacuum (60 mbar) and flow rate (60 L/min) align with Class II vacuum pump specifications defined in ISO 8573-1 for non-critical laboratory vacuum applications.
Is replacement PTFE diaphragm kit available?
Yes—ROCKER offers genuine spare parts under part number CK600-DIA-PTFE, compatible with all Chemker 600 units manufactured after 2018.