AEROTECH Systec 9000-1897 Oil-Free Vacuum Pump for HPLC Solvent Degassing

Overview

The AEROTECH Systec 9000-1897 is an oil-free, two-stage diaphragm vacuum pump engineered specifically for continuous membrane-based degassing of HPLC mobile phases and mixed aqueous–organic solvent systems. Unlike single-speed vacuum sources that cycle on/off—introducing pressure transients and baseline instability—the 9000-1897 employs microstepping RPM control to operate continuously across a dynamically optimized speed range. High-speed operation achieves rapid vacuum pull-down (<60 s to reach 10 mbar), while low-speed maintenance mode sustains stable vacuum at ≤1 mbar with minimal thermal drift and zero pressure hysteresis. This closed-loop operational strategy eliminates vacuum lag-induced baseline noise in UV, fluorescence, and electrochemical HPLC detection—critical for gradient elution, low-concentration trace analysis, and method transfer between platforms such as Waters, Agilent, Shimadzu, and Thermo Fisher UHPLC systems.

Key Features

• Oil-free, two-stage PTFE diaphragm head with integrated duckbill non-return valve—eliminates need for external exhaust valves and prevents backstreaming during power loss
• Brushless DC stepper motor with precision ball-bearing coupling ensures >20,000 hours MTBF under continuous duty; no carbon dust or lubricant contamination risk in solvent-rich lab environments
• Inert fluid path constructed from PTFE, perfluoroelastomer (FFKM), and electropolished 316 stainless steel—validated for compatibility with acetonitrile, methanol, tetrahydrofuran, and 0.1% TFA aqueous solutions
• Compact footprint (300 × 300 × 400 mm) and lightweight design (2.5 kg) enable seamless integration into stacked HPLC modules, autosampler cabinets, or benchtop degassing manifolds
• Cold-running operation: peak surface temperature remains <35°C at ambient 25°C, eliminating thermal expansion effects on connected degas membranes and reducing HVAC load in analytical labs
• Full-vacuum start capability: initiates pumping from atmospheric pressure without priming; maintains vacuum integrity during unexpected power interruption due to mechanical check-valve lock

Sample Compatibility & Compliance

The 9000-1897 is validated for use with commercially available HPLC-grade solvent blends—including water/acetonitrile, water/methanol, and water/THF mixtures up to 95% organic content. Its flow path meets USP material classification requirements for Class VI plastics and complies with ISO 8573-1:2010 Class 0 (oil-free air standard) for non-lubricated vacuum generation. While not a medical device, its construction supports GLP/GMP-aligned laboratory practices: all wetted components are traceably sourced, documentation includes material certificates (EN 10204 3.1), and firmware logs support audit-ready operational history when interfaced with compatible Systec or third-party controller units.

Software & Data Management

The pump operates autonomously but features TTL-level digital I/O (optional RS-485 or CAN bus interface upon request) for integration into centralized lab automation networks. When paired with Systec’s optional DGC-2000 controller, real-time vacuum setpoint tracking, motor current monitoring, and runtime hour logging are accessible via Ethernet-connected web interface. Audit trails comply with FDA 21 CFR Part 11 requirements when deployed with validated electronic signature modules and time-stamped event logging—supporting regulated QC/QA workflows in pharmaceutical and contract research laboratories.

Applications

• Continuous degassing of mobile phase reservoirs in high-throughput HPLC and UHPLC systems (Waters Acquity, Agilent 1290, Shimadzu Nexera, Thermo Vanquish)
• Stabilization of baseline signals in low-UV absorbance assays (e.g., nucleotide quantification at 260 nm) and electrochemical detection where dissolved gas spikes cause signal artifacts
• Prevention of bubble formation in capillary electrophoresis (CE) and nano-LC flow cells
• Supporting solvent recycling loops in green chemistry labs where re-distilled solvents require post-recondensation degassing
• Integration into custom-built multi-solvent blending stations requiring simultaneous vacuum stabilization across ≥4 independent lines

FAQ

Can the 9000-1897 be used with aggressive solvents like chloroform or DMSO?
Yes—provided the optional FFKM diaphragm kit is installed. Standard configuration uses PTFE/EPDM; FFKM upgrade extends chemical resistance to halogenated and polar aprotic solvents per ASTM D1418 guidelines.
Does it require periodic maintenance or filter replacement?
No consumable filters or oil changes are required. Recommended annual inspection includes diaphragm visual assessment and motor encoder calibration verification using included diagnostic utility.
Is it compatible with Systec’s 9000-series degassing modules?
Yes—mechanically and electrically matched to Systec DGM-9000, DGM-9100, and DGM-9200 manifold platforms via standardized M8 quick-connect vacuum ports and 24 VDC power interface.
What is the expected lifetime under continuous 24/7 operation?
Rated for >5 years (43,800 hours) at 70% average speed load; field data from pharmaceutical QC labs shows median service life exceeding 7.2 years with no performance degradation.
Can it be mounted vertically or in confined enclosures?
Yes—no orientation dependency due to gravity-independent diaphragm actuation and passive convection cooling; minimum clearance requirement is 50 mm on all sides for unrestricted airflow.