The KNAUER AZURA P 8.1L is a high-performance UHPLC pump designed for ultra-fast and high-resolution chromatographic applications. With a maximum pressure of 1240 bar (124 MPa) and flow rates up to 5 mL/min, it meets the demands of modern UHPLC workflows.
The pump features a dual serial piston mechanism combined with adaptive pulsation compensation, which operates independently of flow rate, pressure, and solvent type through real-time monitoring of eluent compressibility and variable piston stroke.
Together with KNAUER’s advanced piston drive technology, this results in exceptional flow reproducibility under all operating conditions. High-precision in-house manufacturing ensures long piston seal lifetime and maximum system uptime.
Key Features
- UHPLC pump up to 1240 bar
- Flow rates up to 5 mL/min
- Dual serial piston system
- Adaptive pulsation compensation
- Excellent flow reproducibility
- HPG gradient capability
- Integrated 4-channel degasser
- RFID pump head detection
- Low baseline noise
- High durability and long lifetime
- Compatible with UHPLC and LC-MS systems
Technical Specifications
Solvent Delivery
- Pump type: analytical UHPLC pump
- Mechanism: dual serial piston
- Max pressure: 1240 bar
- Flow rate: up to 5 mL/min
- Flow accuracy: ± 0.25%
- Precision: ≤ 0.04% RSD
Gradient
- Type: HPG (high-pressure gradient)
- Range: 0–100% (0.1% steps)
- Accuracy: ± 0.3%
- Precision: < 0.1% RSD
Degasser
- Channels: 4
- Max flow: 5 mL/min per channel
- Residual O₂: < 0.5 ppm
- Technology: fluoropolymer membrane
Connections
- Inlet: UNF 1/4-28 (1/8” tubing)
- Outlet: UNF 10-32 (1/16” capillary)
Materials
- PEEK, Tefzel®, Systec AF
- Compatible with most solvents (except HCl and halogenated hydrocarbons)
Control & Communication
- LAN, analog inputs
- Event outputs (TTL, relay)
- Optional mobile control
- RFID pump head detection
Safety & Operating Conditions
- Leak sensor
- Soft start and programmable pressure limits
- Temperature: 4–40 °C
- Humidity: < 90% non-condensing
Dimensions & Power
- Dimensions: 361 × 208 × 523 mm
- Weight: 26.7 kg
- Power supply: 100–240 V, 50–60 Hz
- Power consumption: max 310 W
