Waters-Compatible Systec 9000-1472 Membrane Vacuum Degasser Pump
| Brand | Systec |
|---|---|
| Origin | USA |
| Model | 9000-1472 |
| Vacuum Level | ≤5 mTorr (typical) |
| Motor Type | Brushless DC Stepper Motor |
| Power Supply | 12–24 VDC, <15 W |
| Flow Path Materials | PTFE, FFKM, 316 Stainless Steel |
| Diaphragm Design | Continuously Purged Two-Stage Teflon |
| Compliance | CE, RoHS |
| Dimensions | 125 × 85 × 65 mm |
| Weight | 0.95 kg |
Overview
The Systec 9000-1472 is a purpose-engineered membrane vacuum degasser pump designed for continuous, stable vacuum generation in high-performance liquid chromatography (HPLC) and ultra-high-performance liquid chromatography (UHPLC) mobile phase degassing systems. Unlike conventional single-speed vacuum pumps that cycle on/off to maintain setpoint—introducing vacuum hysteresis, baseline drift, and mechanical wear—the 9000-1472 employs micro-stepping RPM control to dynamically modulate motor speed between low and high regimes. This enables rapid initial vacuum pull-down (<60 s to ≤5 mTorr) followed by precise, low-power maintenance at nominal vacuum, eliminating pressure transients that compromise detector stability—particularly critical for UV, fluorescence, and mass spectrometric detection. Its inert, solvent-resistant flow path and continuously purged two-stage PTFE diaphragm head ensure long-term reliability in aggressive aqueous-organic solvent environments (e.g., acetonitrile/water, methanol/water, THF/water), without requiring external vent valves or manual intervention.
Key Features
- Micro-stepping brushless DC stepper motor with ball-bearing drive: delivers quiet operation (<42 dBA), minimal heat generation, and extended service life (>20,000 hours at nominal load)
- Continuously purged dual-stage PTFE diaphragm head: prevents vapor condensation, eliminates need for vent valves, and ensures consistent vacuum integrity across varying ambient temperatures and solvent compositions
- Inert wetted materials: PTFE diaphragms, FFKM seals, and 316 stainless steel manifolds provide full compatibility with HPLC-grade organic solvents, acids, and bases per ASTM D471 and ISO 1817 standards
- Integrated anti-backflow duckbill check valves: prevent solvent back-diffusion during power interruption or system shutdown, maintaining vacuum integrity without external solenoid valves
- Fail-safe vacuum retention: maintains vacuum level for ≥30 minutes after power loss—critical for unattended overnight runs and GLP-compliant workflows
- Compact footprint (125 × 85 × 65 mm) and universal 12–24 VDC input: simplifies integration into OEM degassing modules (e.g., Waters ACQUITY, Agilent 1290, Shimadzu Nexera, Thermo Vanquish) and benchtop standalone units
Sample Compatibility & Compliance
The 9000-1472 is validated for use with common HPLC/UHPLC mobile phases including water/acetonitrile, water/methanol, water/THF, and buffered systems (e.g., ammonium acetate, phosphate buffers pH 2–8). It meets material compatibility requirements outlined in USP <661.1> for polymeric components and complies with IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity). The sealed, brushless motor architecture satisfies ATEX Zone 2 / IECEx requirements for use in laboratory environments where solvent vapors may be intermittently present. No lubricants or hydrocarbon-based elastomers are used in the vacuum path—ensuring zero extractables that could contaminate mobile phase or interfere with LC-MS analysis.
Software & Data Management
As a hardware-level vacuum actuator, the 9000-1472 operates autonomously without embedded firmware or digital interfaces. It integrates seamlessly with existing chromatography data systems (CDS) via analog 0–10 V or 4–20 mA vacuum feedback signals (optional add-on module). When deployed in GxP-regulated laboratories, its passive design supports 21 CFR Part 11 compliance through external audit-trail logging of vacuum status (e.g., via Empower, Chromeleon, or OpenLab CDS), as no user-configurable parameters reside within the pump itself. Maintenance logs—including cumulative runtime and vacuum decay tests—can be tracked using standard lab asset management protocols aligned with ISO/IEC 17025 clause 6.4.3.
Applications
- Online degassing of binary and quaternary HPLC/UHPLC mobile phase reservoirs
- OEM integration into automated sample preparation and LC-MS front-end systems
- Stabilization of baseline noise in low-UV absorbance detection (e.g., 200 nm assays)
- Reduction of bubble formation in capillary electrophoresis (CE) and nano-LC applications
- Support of gradient elution methods requiring sub-10 mTorr vacuum stability over 72+ hour uninterrupted operation
FAQ
Is the 9000-1472 compatible with Waters ACQUITY QSM and H-Class systems?
Yes—it is mechanically and electrically pin-compatible with original Waters 9000-1472 replacement specifications and supports identical vacuum setpoint ranges (1–10 mTorr) and signal interface protocols.
Does it require calibration or periodic adjustment?
No—vacuum regulation is achieved passively via micro-stepping motor control and diaphragm geometry; no user calibration or sensor recalibration is needed.
Can it be used with corrosive mobile phases such as TFA or HFIP?
FFKM seals and PTFE diaphragms offer excellent resistance to trifluoroacetic acid (TFA) and hexafluoroisopropanol (HFIP); however, prolonged exposure to >0.1% HFIP at elevated temperature (>40 °C) is not recommended per manufacturer chemical compatibility charts.
What is the expected mean time between failures (MTBF)?
Based on accelerated life testing under continuous 24/7 operation at 40 °C ambient and 50% duty cycle, MTBF exceeds 15 years (131,400 hours) with proper solvent conditioning and inlet filtration.
Is a CE Declaration of Conformity available?
Yes—full EC Declaration of Conformity (DoC), test reports, and RoHS compliance documentation are provided with each unit shipment and accessible via Systec’s authorized distributor portal.
